20178441400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1\times {\mathrm{389}}^1$

素因数の和:770

約数の個数: 192

約数和(自身を含む): 51549825600

約数和(自身を除く): 31371384200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 71, 100, 104, 130, 142, 200, 260, 281, 284, 325, 355, 389, 520, 562, 568, 650, 710, 778, 923, 1124, 1300, 1405, 1420, 1556, 1775, 1846, 1945, 2248, 2600, 2810, 2840, 3112, 3550, 3653, 3692, 3890, 4615, 5057, 5620, 7025, 7100, 7306, 7384, 7780, 9230, 9725, 10114, 11240, 14050, 14200, 14612, 15560, 18265, 18460, 19450, 19951, 20228, 23075, 25285, 27619, 28100, 29224, 36530, 36920, 38900, 39902, 40456, 46150, 50570, 55238, 56200, 73060, 77800, 79804, 91325, 92300, 99755, 101140, 109309, 110476, 126425, 138095, 146120, 159608, 182650, 184600, 199510, 202280, 218618, 220952, 252850, 259363, 276190, 359047, 365300, 399020, 437236, 498775, 505700, 518726, 546545, 552380, 690475, 718094, 730600, 798040, 874472, 997550, 1011400, 1037452, 1093090, 1104760, 1296815, 1380950, 1421017, 1436188, 1795235, 1995100, 2074904, 2186180, 2593630, 2732725, 2761900, 2842034, 2872376, 3590470, 3990200, 4372360, 5187260, 5465450, 5523800, 5684068, 6484075, 7105085, 7180940, 7760939, 8976175, 10374520, 10930900, 11368136, 12968150, 14210170, 14361880, 15521878, 17952350, 21861800, 25936300, 28420340, 31043756, 35525425, 35904700, 38804695, 51872600, 56840680, 62087512, 71050850, 71809400, 77609390, 100892207, 142101700, 155218780, 194023475, 201784414, 284203400, 310437560, 388046950, 403568828, 504461035, 776093900, 807137656, 1008922070, 1552187800, 2017844140, 2522305175, 4035688280, 5044610350, 10089220700, 20178441400]

約数ペア:

[(1, 20178441400), (2, 10089220700), (4, 5044610350), (5, 4035688280), (8, 2522305175), (10, 2017844140), (13, 1552187800), (20, 1008922070), (25, 807137656), (26, 776093900), (40, 504461035), (50, 403568828), (52, 388046950), (65, 310437560), (71, 284203400), (100, 201784414), (104, 194023475), (130, 155218780), (142, 142101700), (200, 100892207), (260, 77609390), (281, 71809400), (284, 71050850), (325, 62087512), (355, 56840680), (389, 51872600), (520, 38804695), (562, 35904700), (568, 35525425), (650, 31043756), (710, 28420340), (778, 25936300), (923, 21861800), (1124, 17952350), (1300, 15521878), (1405, 14361880), (1420, 14210170), (1556, 12968150), (1775, 11368136), (1846, 10930900), (1945, 10374520), (2248, 8976175), (2600, 7760939), (2810, 7180940), (2840, 7105085), (3112, 6484075), (3550, 5684068), (3653, 5523800), (3692, 5465450), (3890, 5187260), (4615, 4372360), (5057, 3990200), (5620, 3590470), (7025, 2872376), (7100, 2842034), (7306, 2761900), (7384, 2732725), (7780, 2593630), (9230, 2186180), (9725, 2074904), (10114, 1995100), (11240, 1795235), (14050, 1436188), (14200, 1421017), (14612, 1380950), (15560, 1296815), (18265, 1104760), (18460, 1093090), (19450, 1037452), (19951, 1011400), (20228, 997550), (23075, 874472), (25285, 798040), (27619, 730600), (28100, 718094), (29224, 690475), (36530, 552380), (36920, 546545), (38900, 518726), (39902, 505700), (40456, 498775), (46150, 437236), (50570, 399020), (55238, 365300), (56200, 359047), (73060, 276190), (77800, 259363), (79804, 252850), (91325, 220952), (92300, 218618), (99755, 202280), (101140, 199510), (109309, 184600), (110476, 182650), (126425, 159608), (138095, 146120)]