20021580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1$

素因数の和:765

約数の個数: 120

約数和(自身を含む): 66594528

約数和(自身を除く): 46572948

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 255, 270, 306, 324, 340, 405, 459, 510, 540, 612, 727, 765, 810, 918, 1020, 1377, 1454, 1530, 1620, 1836, 2181, 2295, 2754, 2908, 3060, 3635, 4362, 4590, 5508, 6543, 6885, 7270, 8724, 9180, 10905, 12359, 13086, 13770, 14540, 19629, 21810, 24718, 26172, 27540, 32715, 37077, 39258, 43620, 49436, 58887, 61795, 65430, 74154, 78516, 98145, 111231, 117774, 123590, 130860, 148308, 185385, 196290, 222462, 235548, 247180, 294435, 333693, 370770, 392580, 444924, 556155, 588870, 667386, 741540, 1001079, 1112310, 1177740, 1334772, 1668465, 2002158, 2224620, 3336930, 4004316, 5005395, 6673860, 10010790, 20021580]

約数ペア:

[(1, 20021580), (2, 10010790), (3, 6673860), (4, 5005395), (5, 4004316), (6, 3336930), (9, 2224620), (10, 2002158), (12, 1668465), (15, 1334772), (17, 1177740), (18, 1112310), (20, 1001079), (27, 741540), (30, 667386), (34, 588870), (36, 556155), (45, 444924), (51, 392580), (54, 370770), (60, 333693), (68, 294435), (81, 247180), (85, 235548), (90, 222462), (102, 196290), (108, 185385), (135, 148308), (153, 130860), (162, 123590), (170, 117774), (180, 111231), (204, 98145), (255, 78516), (270, 74154), (306, 65430), (324, 61795), (340, 58887), (405, 49436), (459, 43620), (510, 39258), (540, 37077), (612, 32715), (727, 27540), (765, 26172), (810, 24718), (918, 21810), (1020, 19629), (1377, 14540), (1454, 13770), (1530, 13086), (1620, 12359), (1836, 10905), (2181, 9180), (2295, 8724), (2754, 7270), (2908, 6885), (3060, 6543), (3635, 5508), (4362, 4590)]