256700925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 541632000

約数和(自身を除く): 284931075

約数列:

[1, 3, 5, 9, 13, 15, 19, 25, 31, 39, 45, 57, 65, 75, 93, 95, 117, 149, 155, 171, 195, 225, 247, 279, 285, 325, 403, 447, 465, 475, 585, 589, 741, 745, 775, 855, 975, 1209, 1235, 1341, 1395, 1425, 1767, 1937, 2015, 2223, 2235, 2325, 2831, 2925, 2945, 3627, 3705, 3725, 4275, 4619, 5301, 5811, 6045, 6175, 6705, 6975, 7657, 8493, 8835, 9685, 10075, 11115, 11175, 13857, 14155, 14725, 17433, 18135, 18525, 22971, 23095, 25479, 26505, 29055, 30225, 33525, 36803, 38285, 41571, 42465, 44175, 48425, 55575, 60047, 68913, 69285, 70775, 87165, 87761, 90675, 110409, 114855, 115475, 127395, 132525, 145275, 180141, 184015, 191425, 207855, 212325, 263283, 300235, 331227, 344565, 346425, 435825, 438805, 540423, 552045, 574275, 636975, 789849, 900705, 920075, 1039275, 1140893, 1316415, 1501175, 1656135, 1722825, 2194025, 2702115, 2760225, 3422679, 3949245, 4503525, 5704465, 6582075, 8280675, 10268037, 13510575, 17113395, 19746225, 28522325, 51340185, 85566975, 256700925]

約数ペア:

[(1, 256700925), (3, 85566975), (5, 51340185), (9, 28522325), (13, 19746225), (15, 17113395), (19, 13510575), (25, 10268037), (31, 8280675), (39, 6582075), (45, 5704465), (57, 4503525), (65, 3949245), (75, 3422679), (93, 2760225), (95, 2702115), (117, 2194025), (149, 1722825), (155, 1656135), (171, 1501175), (195, 1316415), (225, 1140893), (247, 1039275), (279, 920075), (285, 900705), (325, 789849), (403, 636975), (447, 574275), (465, 552045), (475, 540423), (585, 438805), (589, 435825), (741, 346425), (745, 344565), (775, 331227), (855, 300235), (975, 263283), (1209, 212325), (1235, 207855), (1341, 191425), (1395, 184015), (1425, 180141), (1767, 145275), (1937, 132525), (2015, 127395), (2223, 115475), (2235, 114855), (2325, 110409), (2831, 90675), (2925, 87761), (2945, 87165), (3627, 70775), (3705, 69285), (3725, 68913), (4275, 60047), (4619, 55575), (5301, 48425), (5811, 44175), (6045, 42465), (6175, 41571), (6705, 38285), (6975, 36803), (7657, 33525), (8493, 30225), (8835, 29055), (9685, 26505), (10075, 25479), (11115, 23095), (11175, 22971), (13857, 18525), (14155, 18135), (14725, 17433)]