256913680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139627}}^1$

素因数の和:139663

約数の個数: 40

約数和(自身を含む): 623299392

約数和(自身を除く): 366385712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 139627, 279254, 558508, 698135, 1117016, 1396270, 2234032, 2792540, 3211421, 5585080, 6422842, 11170160, 12845684, 16057105, 25691368, 32114210, 51382736, 64228420, 128456840, 256913680]

約数ペア:

[(1, 256913680), (2, 128456840), (4, 64228420), (5, 51382736), (8, 32114210), (10, 25691368), (16, 16057105), (20, 12845684), (23, 11170160), (40, 6422842), (46, 5585080), (80, 3211421), (92, 2792540), (115, 2234032), (184, 1396270), (230, 1117016), (368, 698135), (460, 558508), (920, 279254), (1840, 139627)]