18936691160

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1\times {\mathrm{389}}^1$

素因数の和:813

約数の個数: 128

約数和(自身を含む): 44185564800

約数和(自身を除く): 25248873640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 122, 142, 244, 281, 284, 305, 355, 389, 488, 562, 568, 610, 710, 778, 1124, 1220, 1405, 1420, 1556, 1945, 2248, 2440, 2810, 2840, 3112, 3890, 4331, 5620, 7780, 8662, 11240, 15560, 17141, 17324, 19951, 21655, 23729, 27619, 34282, 34648, 39902, 43310, 47458, 55238, 68564, 79804, 85705, 86620, 94916, 99755, 109309, 110476, 118645, 137128, 138095, 159608, 171410, 173240, 189832, 199510, 218618, 220952, 237290, 276190, 342820, 399020, 437236, 474580, 546545, 552380, 685640, 798040, 874472, 949160, 1093090, 1104760, 1217011, 1684759, 2186180, 2434022, 3369518, 4372360, 4868044, 6085055, 6667849, 6739036, 7760939, 8423795, 9736088, 12170110, 13335698, 13478072, 15521878, 16847590, 24340220, 26671396, 31043756, 33339245, 33695180, 38804695, 48680440, 53342792, 62087512, 66678490, 67390360, 77609390, 133356980, 155218780, 266713960, 310437560, 473417279, 946834558, 1893669116, 2367086395, 3787338232, 4734172790, 9468345580, 18936691160]

約数ペア:

[(1, 18936691160), (2, 9468345580), (4, 4734172790), (5, 3787338232), (8, 2367086395), (10, 1893669116), (20, 946834558), (40, 473417279), (61, 310437560), (71, 266713960), (122, 155218780), (142, 133356980), (244, 77609390), (281, 67390360), (284, 66678490), (305, 62087512), (355, 53342792), (389, 48680440), (488, 38804695), (562, 33695180), (568, 33339245), (610, 31043756), (710, 26671396), (778, 24340220), (1124, 16847590), (1220, 15521878), (1405, 13478072), (1420, 13335698), (1556, 12170110), (1945, 9736088), (2248, 8423795), (2440, 7760939), (2810, 6739036), (2840, 6667849), (3112, 6085055), (3890, 4868044), (4331, 4372360), (5620, 3369518), (7780, 2434022), (8662, 2186180), (11240, 1684759), (15560, 1217011), (17141, 1104760), (17324, 1093090), (19951, 949160), (21655, 874472), (23729, 798040), (27619, 685640), (34282, 552380), (34648, 546545), (39902, 474580), (43310, 437236), (47458, 399020), (55238, 342820), (68564, 276190), (79804, 237290), (85705, 220952), (86620, 218618), (94916, 199510), (99755, 189832), (109309, 173240), (110476, 171410), (118645, 159608), (137128, 138095)]