30420920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{24533}}^1$

素因数の和:24575

約数の個数: 32

約数和(自身を含む): 70657920

約数和(自身を除く): 40237000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 24533, 49066, 98132, 122665, 196264, 245330, 490660, 760523, 981320, 1521046, 3042092, 3802615, 6084184, 7605230, 15210460, 30420920]

約数ペア:

[(1, 30420920), (2, 15210460), (4, 7605230), (5, 6084184), (8, 3802615), (10, 3042092), (20, 1521046), (31, 981320), (40, 760523), (62, 490660), (124, 245330), (155, 196264), (248, 122665), (310, 98132), (620, 49066), (1240, 24533)]