257994120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:475

約数の個数: 128

約数和(自身を含む): 795018240

約数和(自身を除く): 537024120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 107, 120, 142, 213, 214, 283, 284, 321, 355, 426, 428, 535, 566, 568, 642, 710, 849, 852, 856, 1065, 1070, 1132, 1284, 1415, 1420, 1605, 1698, 1704, 2130, 2140, 2264, 2568, 2830, 2840, 3210, 3396, 4245, 4260, 4280, 5660, 6420, 6792, 7597, 8490, 8520, 11320, 12840, 15194, 16980, 20093, 22791, 30281, 30388, 33960, 37985, 40186, 45582, 60279, 60562, 60776, 75970, 80372, 90843, 91164, 100465, 113955, 120558, 121124, 151405, 151940, 160744, 181686, 182328, 200930, 227910, 241116, 242248, 301395, 302810, 303880, 363372, 401860, 454215, 455820, 482232, 602790, 605620, 726744, 803720, 908430, 911640, 1205580, 1211240, 1816860, 2149951, 2411160, 3633720, 4299902, 6449853, 8599804, 10749755, 12899706, 17199608, 21499510, 25799412, 32249265, 42999020, 51598824, 64498530, 85998040, 128997060, 257994120]

約数ペア:

[(1, 257994120), (2, 128997060), (3, 85998040), (4, 64498530), (5, 51598824), (6, 42999020), (8, 32249265), (10, 25799412), (12, 21499510), (15, 17199608), (20, 12899706), (24, 10749755), (30, 8599804), (40, 6449853), (60, 4299902), (71, 3633720), (107, 2411160), (120, 2149951), (142, 1816860), (213, 1211240), (214, 1205580), (283, 911640), (284, 908430), (321, 803720), (355, 726744), (426, 605620), (428, 602790), (535, 482232), (566, 455820), (568, 454215), (642, 401860), (710, 363372), (849, 303880), (852, 302810), (856, 301395), (1065, 242248), (1070, 241116), (1132, 227910), (1284, 200930), (1415, 182328), (1420, 181686), (1605, 160744), (1698, 151940), (1704, 151405), (2130, 121124), (2140, 120558), (2264, 113955), (2568, 100465), (2830, 91164), (2840, 90843), (3210, 80372), (3396, 75970), (4245, 60776), (4260, 60562), (4280, 60279), (5660, 45582), (6420, 40186), (6792, 37985), (7597, 33960), (8490, 30388), (8520, 30281), (11320, 22791), (12840, 20093), (15194, 16980)]