20264920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38971}}^1$

素因数の和:38995

約数の個数: 32

約数和(自身を含む): 49104720

約数和(自身を除く): 28839800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38971, 77942, 155884, 194855, 311768, 389710, 506623, 779420, 1013246, 1558840, 2026492, 2533115, 4052984, 5066230, 10132460, 20264920]

約数ペア:

[(1, 20264920), (2, 10132460), (4, 5066230), (5, 4052984), (8, 2533115), (10, 2026492), (13, 1558840), (20, 1013246), (26, 779420), (40, 506623), (52, 389710), (65, 311768), (104, 194855), (130, 155884), (260, 77942), (520, 38971)]