21103828

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 37820160

約数和(自身を除く): 16716332

約数列:

[1, 2, 4, 59, 118, 223, 236, 401, 446, 802, 892, 1604, 13157, 23659, 26314, 47318, 52628, 89423, 94636, 178846, 357692, 5275957, 10551914, 21103828]

約数ペア:

[(1, 21103828), (2, 10551914), (4, 5275957), (59, 357692), (118, 178846), (223, 94636), (236, 89423), (401, 52628), (446, 47318), (802, 26314), (892, 23659), (1604, 13157)]