18978800

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2791}}^1$

素因数の和:2826

約数の個数: 60

約数和(自身を含む): 48296016

約数和(自身を除く): 29317216

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 2791, 3400, 5582, 6800, 11164, 13955, 22328, 27910, 44656, 47447, 55820, 69775, 94894, 111640, 139550, 189788, 223280, 237235, 279100, 379576, 474470, 558200, 759152, 948940, 1116400, 1186175, 1897880, 2372350, 3795760, 4744700, 9489400, 18978800]

約数ペア:

[(1, 18978800), (2, 9489400), (4, 4744700), (5, 3795760), (8, 2372350), (10, 1897880), (16, 1186175), (17, 1116400), (20, 948940), (25, 759152), (34, 558200), (40, 474470), (50, 379576), (68, 279100), (80, 237235), (85, 223280), (100, 189788), (136, 139550), (170, 111640), (200, 94894), (272, 69775), (340, 55820), (400, 47447), (425, 44656), (680, 27910), (850, 22328), (1360, 13955), (1700, 11164), (2791, 6800), (3400, 5582)]