20643660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12743}}^1$

素因数の和:12764

約数の個数: 60

約数和(自身を含む): 64765008

約数和(自身を除く): 44121348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12743, 25486, 38229, 50972, 63715, 76458, 114687, 127430, 152916, 191145, 229374, 254860, 344061, 382290, 458748, 573435, 688122, 764580, 1032183, 1146870, 1376244, 1720305, 2064366, 2293740, 3440610, 4128732, 5160915, 6881220, 10321830, 20643660]

約数ペア:

[(1, 20643660), (2, 10321830), (3, 6881220), (4, 5160915), (5, 4128732), (6, 3440610), (9, 2293740), (10, 2064366), (12, 1720305), (15, 1376244), (18, 1146870), (20, 1032183), (27, 764580), (30, 688122), (36, 573435), (45, 458748), (54, 382290), (60, 344061), (81, 254860), (90, 229374), (108, 191145), (135, 152916), (162, 127430), (180, 114687), (270, 76458), (324, 63715), (405, 50972), (540, 38229), (810, 25486), (1620, 12743)]