257433720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2381}}^1$

素因数の和:2465

約数の個数: 128

約数和(自身を含む): 833509440

約数和(自身を除く): 576075720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 53, 60, 68, 85, 102, 106, 120, 136, 159, 170, 204, 212, 255, 265, 318, 340, 408, 424, 510, 530, 636, 680, 795, 901, 1020, 1060, 1272, 1590, 1802, 2040, 2120, 2381, 2703, 3180, 3604, 4505, 4762, 5406, 6360, 7143, 7208, 9010, 9524, 10812, 11905, 13515, 14286, 18020, 19048, 21624, 23810, 27030, 28572, 35715, 36040, 40477, 47620, 54060, 57144, 71430, 80954, 95240, 108120, 121431, 126193, 142860, 161908, 202385, 242862, 252386, 285720, 323816, 378579, 404770, 485724, 504772, 607155, 630965, 757158, 809540, 971448, 1009544, 1214310, 1261930, 1514316, 1619080, 1892895, 2145281, 2428620, 2523860, 3028632, 3785790, 4290562, 4857240, 5047720, 6435843, 7571580, 8581124, 10726405, 12871686, 15143160, 17162248, 21452810, 25743372, 32179215, 42905620, 51486744, 64358430, 85811240, 128716860, 257433720]

約数ペア:

[(1, 257433720), (2, 128716860), (3, 85811240), (4, 64358430), (5, 51486744), (6, 42905620), (8, 32179215), (10, 25743372), (12, 21452810), (15, 17162248), (17, 15143160), (20, 12871686), (24, 10726405), (30, 8581124), (34, 7571580), (40, 6435843), (51, 5047720), (53, 4857240), (60, 4290562), (68, 3785790), (85, 3028632), (102, 2523860), (106, 2428620), (120, 2145281), (136, 1892895), (159, 1619080), (170, 1514316), (204, 1261930), (212, 1214310), (255, 1009544), (265, 971448), (318, 809540), (340, 757158), (408, 630965), (424, 607155), (510, 504772), (530, 485724), (636, 404770), (680, 378579), (795, 323816), (901, 285720), (1020, 252386), (1060, 242862), (1272, 202385), (1590, 161908), (1802, 142860), (2040, 126193), (2120, 121431), (2381, 108120), (2703, 95240), (3180, 80954), (3604, 71430), (4505, 57144), (4762, 54060), (5406, 47620), (6360, 40477), (7143, 36040), (7208, 35715), (9010, 28572), (9524, 27030), (10812, 23810), (11905, 21624), (13515, 19048), (14286, 18020)]