90900880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23189}}^1$

素因数の和:23216

約数の個数: 60

約数和(自身を含む): 245860380

約数和(自身を除く): 154959500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 23189, 46378, 92756, 115945, 162323, 185512, 231890, 324646, 371024, 463780, 649292, 811615, 927560, 1136261, 1298584, 1623230, 1855120, 2272522, 2597168, 3246460, 4545044, 5681305, 6492920, 9090088, 11362610, 12985840, 18180176, 22725220, 45450440, 90900880]

約数ペア:

[(1, 90900880), (2, 45450440), (4, 22725220), (5, 18180176), (7, 12985840), (8, 11362610), (10, 9090088), (14, 6492920), (16, 5681305), (20, 4545044), (28, 3246460), (35, 2597168), (40, 2272522), (49, 1855120), (56, 1623230), (70, 1298584), (80, 1136261), (98, 927560), (112, 811615), (140, 649292), (196, 463780), (245, 371024), (280, 324646), (392, 231890), (490, 185512), (560, 162323), (784, 115945), (980, 92756), (1960, 46378), (3920, 23189)]