21631860

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4451}}^1$

素因数の和:4475

約数の個数: 72

約数和(自身を含む): 68062176

約数和(自身を除く): 46430316

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, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4451, 4860, 8902, 13353, 17804, 22255, 26706, 40059, 44510, 53412, 66765, 80118, 89020, 120177, 133530, 160236, 200295, 240354, 267060, 360531, 400590, 480708, 600885, 721062, 801180, 1081593, 1201770, 1442124, 1802655, 2163186, 2403540, 3605310, 4326372, 5407965, 7210620, 10815930, 21631860]

約数ペア:

[(1, 21631860), (2, 10815930), (3, 7210620), (4, 5407965), (5, 4326372), (6, 3605310), (9, 2403540), (10, 2163186), (12, 1802655), (15, 1442124), (18, 1201770), (20, 1081593), (27, 801180), (30, 721062), (36, 600885), (45, 480708), (54, 400590), (60, 360531), (81, 267060), (90, 240354), (108, 200295), (135, 160236), (162, 133530), (180, 120177), (243, 89020), (270, 80118), (324, 66765), (405, 53412), (486, 44510), (540, 40059), (810, 26706), (972, 22255), (1215, 17804), (1620, 13353), (2430, 8902), (4451, 4860)]