1640676880

素因数分解:

$2^4\times 5^1\times {\mathrm{769}}^1\times {\mathrm{26669}}^1$

素因数の和:27451

約数の個数: 40

約数和(自身を含む): 3819677400

約数和(自身を除く): 2179000520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 769, 1538, 3076, 3845, 6152, 7690, 12304, 15380, 26669, 30760, 53338, 61520, 106676, 133345, 213352, 266690, 426704, 533380, 1066760, 2133520, 20508461, 41016922, 82033844, 102542305, 164067688, 205084610, 328135376, 410169220, 820338440, 1640676880]

約数ペア:

[(1, 1640676880), (2, 820338440), (4, 410169220), (5, 328135376), (8, 205084610), (10, 164067688), (16, 102542305), (20, 82033844), (40, 41016922), (80, 20508461), (769, 2133520), (1538, 1066760), (3076, 533380), (3845, 426704), (6152, 266690), (7690, 213352), (12304, 133345), (15380, 106676), (26669, 61520), (30760, 53338)]