287062940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{1789}}^1$

素因数の和:1982

約数の個数: 48

約数和(自身を含む): 617077440

約数和(自身を除く): 330014500

約数列:

[1, 2, 4, 5, 10, 20, 71, 113, 142, 226, 284, 355, 452, 565, 710, 1130, 1420, 1789, 2260, 3578, 7156, 8023, 8945, 16046, 17890, 32092, 35780, 40115, 80230, 127019, 160460, 202157, 254038, 404314, 508076, 635095, 808628, 1010785, 1270190, 2021570, 2540380, 4043140, 14353147, 28706294, 57412588, 71765735, 143531470, 287062940]

約数ペア:

[(1, 287062940), (2, 143531470), (4, 71765735), (5, 57412588), (10, 28706294), (20, 14353147), (71, 4043140), (113, 2540380), (142, 2021570), (226, 1270190), (284, 1010785), (355, 808628), (452, 635095), (565, 508076), (710, 404314), (1130, 254038), (1420, 202157), (1789, 160460), (2260, 127019), (3578, 80230), (7156, 40115), (8023, 35780), (8945, 32092), (16046, 17890)]