20101860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{617}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 61411896

約数和(自身を除く): 41310036

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 181, 362, 543, 617, 724, 905, 1086, 1234, 1629, 1810, 1851, 2172, 2468, 2715, 3085, 3258, 3620, 3702, 5430, 5553, 6170, 6516, 7404, 8145, 9255, 10860, 11106, 12340, 16290, 18510, 22212, 27765, 32580, 37020, 55530, 111060, 111677, 223354, 335031, 446708, 558385, 670062, 1005093, 1116770, 1340124, 1675155, 2010186, 2233540, 3350310, 4020372, 5025465, 6700620, 10050930, 20101860]

約数ペア:

[(1, 20101860), (2, 10050930), (3, 6700620), (4, 5025465), (5, 4020372), (6, 3350310), (9, 2233540), (10, 2010186), (12, 1675155), (15, 1340124), (18, 1116770), (20, 1005093), (30, 670062), (36, 558385), (45, 446708), (60, 335031), (90, 223354), (180, 111677), (181, 111060), (362, 55530), (543, 37020), (617, 32580), (724, 27765), (905, 22212), (1086, 18510), (1234, 16290), (1629, 12340), (1810, 11106), (1851, 10860), (2172, 9255), (2468, 8145), (2715, 7404), (3085, 6516), (3258, 6170), (3620, 5553), (3702, 5430)]