1640201720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{34487}}^1$

素因数の和:34568

約数の個数: 64

約数和(自身を含む): 3910939200

約数和(自身を除く): 2270737480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 580, 820, 1160, 1189, 1640, 2378, 4756, 5945, 9512, 11890, 23780, 34487, 47560, 68974, 137948, 172435, 275896, 344870, 689740, 1000123, 1379480, 1413967, 2000246, 2827934, 4000492, 5000615, 5655868, 7069835, 8000984, 10001230, 11311736, 14139670, 20002460, 28279340, 40004920, 41005043, 56558680, 82010086, 164020172, 205025215, 328040344, 410050430, 820100860, 1640201720]

約数ペア:

[(1, 1640201720), (2, 820100860), (4, 410050430), (5, 328040344), (8, 205025215), (10, 164020172), (20, 82010086), (29, 56558680), (40, 41005043), (41, 40004920), (58, 28279340), (82, 20002460), (116, 14139670), (145, 11311736), (164, 10001230), (205, 8000984), (232, 7069835), (290, 5655868), (328, 5000615), (410, 4000492), (580, 2827934), (820, 2000246), (1160, 1413967), (1189, 1379480), (1640, 1000123), (2378, 689740), (4756, 344870), (5945, 275896), (9512, 172435), (11890, 137948), (23780, 68974), (34487, 47560)]