21357296

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{7993}}^1$

素因数の和:8168

約数の個数: 20

約数和(自身を含む): 41632752

約数和(自身を除く): 20275456

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 7993, 15986, 31972, 63944, 127888, 1334831, 2669662, 5339324, 10678648, 21357296]

約数ペア:

[(1, 21357296), (2, 10678648), (4, 5339324), (8, 2669662), (16, 1334831), (167, 127888), (334, 63944), (668, 31972), (1336, 15986), (2672, 7993)]