21495915

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 96

約数和(自身を含む): 46717440

約数和(自身を除く): 25221525

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 27, 35, 43, 45, 63, 69, 105, 115, 129, 135, 161, 189, 207, 215, 301, 315, 345, 387, 483, 529, 621, 645, 805, 903, 945, 989, 1035, 1161, 1449, 1505, 1587, 1935, 2415, 2645, 2709, 2967, 3105, 3703, 4347, 4515, 4761, 4945, 5805, 6923, 7245, 7935, 8127, 8901, 11109, 13545, 14283, 14835, 18515, 20769, 21735, 22747, 23805, 26703, 33327, 34615, 40635, 44505, 55545, 62307, 68241, 71415, 99981, 103845, 113735, 133515, 159229, 166635, 186921, 204723, 311535, 341205, 477687, 499905, 614169, 796145, 934605, 1023615, 1433061, 2388435, 3070845, 4299183, 7165305, 21495915]

約数ペア:

[(1, 21495915), (3, 7165305), (5, 4299183), (7, 3070845), (9, 2388435), (15, 1433061), (21, 1023615), (23, 934605), (27, 796145), (35, 614169), (43, 499905), (45, 477687), (63, 341205), (69, 311535), (105, 204723), (115, 186921), (129, 166635), (135, 159229), (161, 133515), (189, 113735), (207, 103845), (215, 99981), (301, 71415), (315, 68241), (345, 62307), (387, 55545), (483, 44505), (529, 40635), (621, 34615), (645, 33327), (805, 26703), (903, 23805), (945, 22747), (989, 21735), (1035, 20769), (1161, 18515), (1449, 14835), (1505, 14283), (1587, 13545), (1935, 11109), (2415, 8901), (2645, 8127), (2709, 7935), (2967, 7245), (3105, 6923), (3703, 5805), (4347, 4945), (4515, 4761)]