89983880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{321371}}^1$

素因数の和:321389

約数の個数: 32

約数和(自身を含む): 231387840

約数和(自身を除く): 141403960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 321371, 642742, 1285484, 1606855, 2249597, 2570968, 3213710, 4499194, 6427420, 8998388, 11247985, 12854840, 17996776, 22495970, 44991940, 89983880]

約数ペア:

[(1, 89983880), (2, 44991940), (4, 22495970), (5, 17996776), (7, 12854840), (8, 11247985), (10, 8998388), (14, 6427420), (20, 4499194), (28, 3213710), (35, 2570968), (40, 2249597), (56, 1606855), (70, 1285484), (140, 642742), (280, 321371)]