19613750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:123

約数の個数: 80

約数和(自身を含む): 42511392

約数和(自身を除く): 22897642

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 71, 85, 125, 130, 142, 170, 221, 250, 325, 355, 425, 442, 625, 650, 710, 850, 923, 1105, 1207, 1250, 1625, 1775, 1846, 2125, 2210, 2414, 3250, 3550, 4250, 4615, 5525, 6035, 8125, 8875, 9230, 10625, 11050, 12070, 15691, 16250, 17750, 21250, 23075, 27625, 30175, 31382, 44375, 46150, 55250, 60350, 78455, 88750, 115375, 138125, 150875, 156910, 230750, 276250, 301750, 392275, 576875, 754375, 784550, 1153750, 1508750, 1961375, 3922750, 9806875, 19613750]

約数ペア:

[(1, 19613750), (2, 9806875), (5, 3922750), (10, 1961375), (13, 1508750), (17, 1153750), (25, 784550), (26, 754375), (34, 576875), (50, 392275), (65, 301750), (71, 276250), (85, 230750), (125, 156910), (130, 150875), (142, 138125), (170, 115375), (221, 88750), (250, 78455), (325, 60350), (355, 55250), (425, 46150), (442, 44375), (625, 31382), (650, 30175), (710, 27625), (850, 23075), (923, 21250), (1105, 17750), (1207, 16250), (1250, 15691), (1625, 12070), (1775, 11050), (1846, 10625), (2125, 9230), (2210, 8875), (2414, 8125), (3250, 6035), (3550, 5525), (4250, 4615)]