256870900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 216

約数和(自身を含む): 698205312

約数和(自身を除く): 441334412

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 23, 25, 26, 44, 46, 50, 52, 55, 65, 71, 92, 100, 110, 115, 121, 130, 142, 143, 220, 230, 242, 253, 260, 275, 284, 286, 299, 325, 355, 460, 484, 506, 550, 572, 575, 598, 605, 650, 710, 715, 781, 923, 1012, 1100, 1150, 1196, 1210, 1265, 1300, 1420, 1430, 1495, 1562, 1573, 1633, 1775, 1846, 2300, 2420, 2530, 2783, 2860, 2990, 3025, 3124, 3146, 3266, 3289, 3550, 3575, 3692, 3905, 4615, 5060, 5566, 5980, 6050, 6292, 6325, 6532, 6578, 7100, 7150, 7475, 7810, 7865, 8165, 8591, 9230, 10153, 11132, 12100, 12650, 13156, 13915, 14300, 14950, 15620, 15730, 16330, 16445, 17182, 17963, 18460, 19525, 20306, 21229, 23075, 25300, 27830, 29900, 31460, 32660, 32890, 34364, 35926, 36179, 39050, 39325, 40612, 40825, 42458, 42955, 46150, 50765, 55660, 65780, 69575, 71852, 72358, 78100, 78650, 81650, 82225, 84916, 85910, 89815, 92300, 101530, 106145, 111683, 139150, 144716, 157300, 163300, 164450, 171820, 179630, 180895, 197593, 203060, 212290, 214775, 223366, 233519, 253825, 278300, 328900, 359260, 361790, 395186, 424580, 429550, 446732, 449075, 467038, 507650, 530725, 558415, 723580, 790372, 859100, 898150, 904475, 934076, 987965, 1015300, 1061450, 1116830, 1167595, 1796300, 1808950, 1975930, 2122900, 2233660, 2335190, 2568709, 2792075, 3617900, 3951860, 4670380, 4939825, 5137418, 5584150, 5837975, 9879650, 10274836, 11168300, 11675950, 12843545, 19759300, 23351900, 25687090, 51374180, 64217725, 128435450, 256870900]

約数ペア:

[(1, 256870900), (2, 128435450), (4, 64217725), (5, 51374180), (10, 25687090), (11, 23351900), (13, 19759300), (20, 12843545), (22, 11675950), (23, 11168300), (25, 10274836), (26, 9879650), (44, 5837975), (46, 5584150), (50, 5137418), (52, 4939825), (55, 4670380), (65, 3951860), (71, 3617900), (92, 2792075), (100, 2568709), (110, 2335190), (115, 2233660), (121, 2122900), (130, 1975930), (142, 1808950), (143, 1796300), (220, 1167595), (230, 1116830), (242, 1061450), (253, 1015300), (260, 987965), (275, 934076), (284, 904475), (286, 898150), (299, 859100), (325, 790372), (355, 723580), (460, 558415), (484, 530725), (506, 507650), (550, 467038), (572, 449075), (575, 446732), (598, 429550), (605, 424580), (650, 395186), (710, 361790), (715, 359260), (781, 328900), (923, 278300), (1012, 253825), (1100, 233519), (1150, 223366), (1196, 214775), (1210, 212290), (1265, 203060), (1300, 197593), (1420, 180895), (1430, 179630), (1495, 171820), (1562, 164450), (1573, 163300), (1633, 157300), (1775, 144716), (1846, 139150), (2300, 111683), (2420, 106145), (2530, 101530), (2783, 92300), (2860, 89815), (2990, 85910), (3025, 84916), (3124, 82225), (3146, 81650), (3266, 78650), (3289, 78100), (3550, 72358), (3575, 71852), (3692, 69575), (3905, 65780), (4615, 55660), (5060, 50765), (5566, 46150), (5980, 42955), (6050, 42458), (6292, 40825), (6325, 40612), (6532, 39325), (6578, 39050), (7100, 36179), (7150, 35926), (7475, 34364), (7810, 32890), (7865, 32660), (8165, 31460), (8591, 29900), (9230, 27830), (10153, 25300), (11132, 23075), (12100, 21229), (12650, 20306), (13156, 19525), (13915, 18460), (14300, 17963), (14950, 17182), (15620, 16445), (15730, 16330)]