18990450

素因数分解:

$2^1\times 3^6\times 5^2\times {\mathrm{521}}^1$

素因数の和:551

約数の個数: 84

約数和(自身を含む): 53060778

約数和(自身を除く): 34070328

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 50, 54, 75, 81, 90, 135, 150, 162, 225, 243, 270, 405, 450, 486, 521, 675, 729, 810, 1042, 1215, 1350, 1458, 1563, 2025, 2430, 2605, 3126, 3645, 4050, 4689, 5210, 6075, 7290, 7815, 9378, 12150, 13025, 14067, 15630, 18225, 23445, 26050, 28134, 36450, 39075, 42201, 46890, 70335, 78150, 84402, 117225, 126603, 140670, 211005, 234450, 253206, 351675, 379809, 422010, 633015, 703350, 759618, 1055025, 1266030, 1899045, 2110050, 3165075, 3798090, 6330150, 9495225, 18990450]

約数ペア:

[(1, 18990450), (2, 9495225), (3, 6330150), (5, 3798090), (6, 3165075), (9, 2110050), (10, 1899045), (15, 1266030), (18, 1055025), (25, 759618), (27, 703350), (30, 633015), (45, 422010), (50, 379809), (54, 351675), (75, 253206), (81, 234450), (90, 211005), (135, 140670), (150, 126603), (162, 117225), (225, 84402), (243, 78150), (270, 70335), (405, 46890), (450, 42201), (486, 39075), (521, 36450), (675, 28134), (729, 26050), (810, 23445), (1042, 18225), (1215, 15630), (1350, 14067), (1458, 13025), (1563, 12150), (2025, 9378), (2430, 7815), (2605, 7290), (3126, 6075), (3645, 5210), (4050, 4689)]