21002072

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1697}}^1$

素因数の和:1740

約数の個数: 64

約数和(自身を含む): 51347520

約数和(自身を除く): 30345448

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 52, 56, 68, 91, 104, 119, 136, 182, 221, 238, 364, 442, 476, 728, 884, 952, 1547, 1697, 1768, 3094, 3394, 6188, 6788, 11879, 12376, 13576, 22061, 23758, 28849, 44122, 47516, 57698, 88244, 95032, 115396, 154427, 176488, 201943, 230792, 308854, 375037, 403886, 617708, 750074, 807772, 1235416, 1500148, 1615544, 2625259, 3000296, 5250518, 10501036, 21002072]

約数ペア:

[(1, 21002072), (2, 10501036), (4, 5250518), (7, 3000296), (8, 2625259), (13, 1615544), (14, 1500148), (17, 1235416), (26, 807772), (28, 750074), (34, 617708), (52, 403886), (56, 375037), (68, 308854), (91, 230792), (104, 201943), (119, 176488), (136, 154427), (182, 115396), (221, 95032), (238, 88244), (364, 57698), (442, 47516), (476, 44122), (728, 28849), (884, 23758), (952, 22061), (1547, 13576), (1697, 12376), (1768, 11879), (3094, 6788), (3394, 6188)]