28294040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 68256000

約数和(自身を除く): 39961960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 236, 295, 380, 472, 590, 631, 760, 1121, 1180, 1262, 2242, 2360, 2524, 3155, 4484, 5048, 5605, 6310, 8968, 11210, 11989, 12620, 22420, 23978, 25240, 37229, 44840, 47956, 59945, 74458, 95912, 119890, 148916, 186145, 239780, 297832, 372290, 479560, 707351, 744580, 1414702, 1489160, 2829404, 3536755, 5658808, 7073510, 14147020, 28294040]

約数ペア:

[(1, 28294040), (2, 14147020), (4, 7073510), (5, 5658808), (8, 3536755), (10, 2829404), (19, 1489160), (20, 1414702), (38, 744580), (40, 707351), (59, 479560), (76, 372290), (95, 297832), (118, 239780), (152, 186145), (190, 148916), (236, 119890), (295, 95912), (380, 74458), (472, 59945), (590, 47956), (631, 44840), (760, 37229), (1121, 25240), (1180, 23978), (1262, 22420), (2242, 12620), (2360, 11989), (2524, 11210), (3155, 8968), (4484, 6310), (5048, 5605)]