21049203820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{547871}}^1$

素因数の和:548010

約数の個数: 48

約数和(自身を含む): 47217800448

約数和(自身を除く): 26168596628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 565, 1130, 1921, 2260, 3842, 7684, 9605, 19210, 38420, 547871, 1095742, 2191484, 2739355, 5478710, 9313807, 10957420, 18627614, 37255228, 46569035, 61909423, 93138070, 123818846, 186276140, 247637692, 309547115, 619094230, 1052460191, 1238188460, 2104920382, 4209840764, 5262300955, 10524601910, 21049203820]

約数ペア:

[(1, 21049203820), (2, 10524601910), (4, 5262300955), (5, 4209840764), (10, 2104920382), (17, 1238188460), (20, 1052460191), (34, 619094230), (68, 309547115), (85, 247637692), (113, 186276140), (170, 123818846), (226, 93138070), (340, 61909423), (452, 46569035), (565, 37255228), (1130, 18627614), (1921, 10957420), (2260, 9313807), (3842, 5478710), (7684, 2739355), (9605, 2191484), (19210, 1095742), (38420, 547871)]