21631000

素因数分解:

$2^3\times 5^3\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 51367680

約数和(自身を除く): 29736680

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 125, 194, 200, 223, 250, 388, 446, 485, 500, 776, 892, 970, 1000, 1115, 1784, 1940, 2230, 2425, 3880, 4460, 4850, 5575, 8920, 9700, 11150, 12125, 19400, 21631, 22300, 24250, 27875, 43262, 44600, 48500, 55750, 86524, 97000, 108155, 111500, 173048, 216310, 223000, 432620, 540775, 865240, 1081550, 2163100, 2703875, 4326200, 5407750, 10815500, 21631000]

約数ペア:

[(1, 21631000), (2, 10815500), (4, 5407750), (5, 4326200), (8, 2703875), (10, 2163100), (20, 1081550), (25, 865240), (40, 540775), (50, 432620), (97, 223000), (100, 216310), (125, 173048), (194, 111500), (200, 108155), (223, 97000), (250, 86524), (388, 55750), (446, 48500), (485, 44600), (500, 43262), (776, 27875), (892, 24250), (970, 22300), (1000, 21631), (1115, 19400), (1784, 12125), (1940, 11150), (2230, 9700), (2425, 8920), (3880, 5575), (4460, 4850)]