21068895

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 34781184

約数和(自身を除く): 13712289

約数列:

[1, 3, 5, 15, 71, 73, 213, 219, 271, 355, 365, 813, 1065, 1095, 1355, 4065, 5183, 15549, 19241, 19783, 25915, 57723, 59349, 77745, 96205, 98915, 288615, 296745, 1404593, 4213779, 7022965, 21068895]

約数ペア:

[(1, 21068895), (3, 7022965), (5, 4213779), (15, 1404593), (71, 296745), (73, 288615), (213, 98915), (219, 96205), (271, 77745), (355, 59349), (365, 57723), (813, 25915), (1065, 19783), (1095, 19241), (1355, 15549), (4065, 5183)]