21916020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52181}}^1$

素因数の和:52200

約数の個数: 48

約数和(自身を含む): 70132608

約数和(自身を除く): 48216588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 52181, 104362, 156543, 208724, 260905, 313086, 365267, 521810, 626172, 730534, 782715, 1043620, 1095801, 1461068, 1565430, 1826335, 2191602, 3130860, 3652670, 4383204, 5479005, 7305340, 10958010, 21916020]

約数ペア:

[(1, 21916020), (2, 10958010), (3, 7305340), (4, 5479005), (5, 4383204), (6, 3652670), (7, 3130860), (10, 2191602), (12, 1826335), (14, 1565430), (15, 1461068), (20, 1095801), (21, 1043620), (28, 782715), (30, 730534), (35, 626172), (42, 521810), (60, 365267), (70, 313086), (84, 260905), (105, 208724), (140, 156543), (210, 104362), (420, 52181)]