128666480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{84649}}^1$

素因数の和:84681

約数の個数: 40

約数和(自身を含む): 314898000

約数和(自身を除く): 186231520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 84649, 169298, 338596, 423245, 677192, 846490, 1354384, 1608331, 1692980, 3216662, 3385960, 6433324, 6771920, 8041655, 12866648, 16083310, 25733296, 32166620, 64333240, 128666480]

約数ペア:

[(1, 128666480), (2, 64333240), (4, 32166620), (5, 25733296), (8, 16083310), (10, 12866648), (16, 8041655), (19, 6771920), (20, 6433324), (38, 3385960), (40, 3216662), (76, 1692980), (80, 1608331), (95, 1354384), (152, 846490), (190, 677192), (304, 423245), (380, 338596), (760, 169298), (1520, 84649)]