20556705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 35642880

約数和(自身を除く): 15086175

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 271, 389, 813, 1167, 1355, 1945, 3523, 4065, 5057, 5835, 10569, 15171, 17615, 25285, 52845, 75855, 105419, 316257, 527095, 1370447, 1581285, 4111341, 6852235, 20556705]

約数ペア:

[(1, 20556705), (3, 6852235), (5, 4111341), (13, 1581285), (15, 1370447), (39, 527095), (65, 316257), (195, 105419), (271, 75855), (389, 52845), (813, 25285), (1167, 17615), (1355, 15171), (1945, 10569), (3523, 5835), (4065, 5057)]