21811600

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1759}}^1$

素因数の和:1808

約数の個数: 60

約数和(自身を含む): 54123520

約数和(自身を除く): 32311920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1759, 2480, 3100, 3518, 6200, 7036, 8795, 12400, 14072, 17590, 28144, 35180, 43975, 54529, 70360, 87950, 109058, 140720, 175900, 218116, 272645, 351800, 436232, 545290, 703600, 872464, 1090580, 1363225, 2181160, 2726450, 4362320, 5452900, 10905800, 21811600]

約数ペア:

[(1, 21811600), (2, 10905800), (4, 5452900), (5, 4362320), (8, 2726450), (10, 2181160), (16, 1363225), (20, 1090580), (25, 872464), (31, 703600), (40, 545290), (50, 436232), (62, 351800), (80, 272645), (100, 218116), (124, 175900), (155, 140720), (200, 109058), (248, 87950), (310, 70360), (400, 54529), (496, 43975), (620, 35180), (775, 28144), (1240, 17590), (1550, 14072), (1759, 12400), (2480, 8795), (3100, 7036), (3518, 6200)]