640356730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{67477}}^1$

素因数の和:67570

約数の個数: 32

約数和(自身を含む): 1258329744

約数和(自身を除く): 617973014

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 4745, 9490, 67477, 134954, 337385, 674770, 877201, 1754402, 4386005, 4925821, 8772010, 9851642, 24629105, 49258210, 64035673, 128071346, 320178365, 640356730]

約数ペア:

[(1, 640356730), (2, 320178365), (5, 128071346), (10, 64035673), (13, 49258210), (26, 24629105), (65, 9851642), (73, 8772010), (130, 4925821), (146, 4386005), (365, 1754402), (730, 877201), (949, 674770), (1898, 337385), (4745, 134954), (9490, 67477)]