21442545

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{809}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 18992655

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 57, 93, 95, 155, 171, 279, 285, 465, 589, 809, 855, 1395, 1767, 2427, 2945, 4045, 5301, 7281, 8835, 12135, 15371, 25079, 26505, 36405, 46113, 75237, 76855, 125395, 138339, 225711, 230565, 376185, 476501, 691695, 1128555, 1429503, 2382505, 4288509, 7147515, 21442545]

約数ペア:

[(1, 21442545), (3, 7147515), (5, 4288509), (9, 2382505), (15, 1429503), (19, 1128555), (31, 691695), (45, 476501), (57, 376185), (93, 230565), (95, 225711), (155, 138339), (171, 125395), (279, 76855), (285, 75237), (465, 46113), (589, 36405), (809, 26505), (855, 25079), (1395, 15371), (1767, 12135), (2427, 8835), (2945, 7281), (4045, 5301)]