21581950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{33203}}^1$

素因数の和:33228

約数の個数: 24

約数和(自身を含む): 43231608

約数和(自身を除く): 21649658

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 33203, 66406, 166015, 332030, 431639, 830075, 863278, 1660150, 2158195, 4316390, 10790975, 21581950]

約数ペア:

[(1, 21581950), (2, 10790975), (5, 4316390), (10, 2158195), (13, 1660150), (25, 863278), (26, 830075), (50, 431639), (65, 332030), (130, 166015), (325, 66406), (650, 33203)]