20249840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19471}}^1$

素因数の和:19497

約数の個数: 40

約数和(自身を含む): 50705088

約数和(自身を除く): 30455248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19471, 38942, 77884, 97355, 155768, 194710, 253123, 311536, 389420, 506246, 778840, 1012492, 1265615, 1557680, 2024984, 2531230, 4049968, 5062460, 10124920, 20249840]

約数ペア:

[(1, 20249840), (2, 10124920), (4, 5062460), (5, 4049968), (8, 2531230), (10, 2024984), (13, 1557680), (16, 1265615), (20, 1012492), (26, 778840), (40, 506246), (52, 389420), (65, 311536), (80, 253123), (104, 194710), (130, 155768), (208, 97355), (260, 77884), (520, 38942), (1040, 19471)]