19972980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12329}}^1$

素因数の和:12350

約数の個数: 60

約数和(自身を含む): 62661060

約数和(自身を除く): 42688080

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, 12329, 24658, 36987, 49316, 61645, 73974, 110961, 123290, 147948, 184935, 221922, 246580, 332883, 369870, 443844, 554805, 665766, 739740, 998649, 1109610, 1331532, 1664415, 1997298, 2219220, 3328830, 3994596, 4993245, 6657660, 9986490, 19972980]

約数ペア:

[(1, 19972980), (2, 9986490), (3, 6657660), (4, 4993245), (5, 3994596), (6, 3328830), (9, 2219220), (10, 1997298), (12, 1664415), (15, 1331532), (18, 1109610), (20, 998649), (27, 739740), (30, 665766), (36, 554805), (45, 443844), (54, 369870), (60, 332883), (81, 246580), (90, 221922), (108, 184935), (135, 147948), (162, 123290), (180, 110961), (270, 73974), (324, 61645), (405, 49316), (540, 36987), (810, 24658), (1620, 12329)]