21544880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{487}}^1$

素因数の和:586

約数の個数: 80

約数和(自身を含む): 58091520

約数和(自身を除く): 36546640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 487, 553, 560, 632, 790, 974, 1106, 1264, 1580, 1948, 2212, 2435, 2765, 3160, 3409, 3896, 4424, 4870, 5530, 6320, 6818, 7792, 8848, 9740, 11060, 13636, 17045, 19480, 22120, 27272, 34090, 38473, 38960, 44240, 54544, 68180, 76946, 136360, 153892, 192365, 269311, 272720, 307784, 384730, 538622, 615568, 769460, 1077244, 1346555, 1538920, 2154488, 2693110, 3077840, 4308976, 5386220, 10772440, 21544880]

約数ペア:

[(1, 21544880), (2, 10772440), (4, 5386220), (5, 4308976), (7, 3077840), (8, 2693110), (10, 2154488), (14, 1538920), (16, 1346555), (20, 1077244), (28, 769460), (35, 615568), (40, 538622), (56, 384730), (70, 307784), (79, 272720), (80, 269311), (112, 192365), (140, 153892), (158, 136360), (280, 76946), (316, 68180), (395, 54544), (487, 44240), (553, 38960), (560, 38473), (632, 34090), (790, 27272), (974, 22120), (1106, 19480), (1264, 17045), (1580, 13636), (1948, 11060), (2212, 9740), (2435, 8848), (2765, 7792), (3160, 6818), (3409, 6320), (3896, 5530), (4424, 4870)]