19740800

素因数分解:

$2^7\times 5^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 50592000

約数和(自身を除く): 30851200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 199, 200, 248, 310, 320, 398, 400, 496, 620, 640, 775, 796, 800, 992, 995, 1240, 1550, 1592, 1600, 1984, 1990, 2480, 3100, 3184, 3200, 3968, 3980, 4960, 4975, 6169, 6200, 6368, 7960, 9920, 9950, 12338, 12400, 12736, 15920, 19840, 19900, 24676, 24800, 25472, 30845, 31840, 39800, 49352, 49600, 61690, 63680, 79600, 98704, 99200, 123380, 127360, 154225, 159200, 197408, 246760, 308450, 318400, 394816, 493520, 616900, 636800, 789632, 987040, 1233800, 1974080, 2467600, 3948160, 4935200, 9870400, 19740800]

約数ペア:

[(1, 19740800), (2, 9870400), (4, 4935200), (5, 3948160), (8, 2467600), (10, 1974080), (16, 1233800), (20, 987040), (25, 789632), (31, 636800), (32, 616900), (40, 493520), (50, 394816), (62, 318400), (64, 308450), (80, 246760), (100, 197408), (124, 159200), (128, 154225), (155, 127360), (160, 123380), (199, 99200), (200, 98704), (248, 79600), (310, 63680), (320, 61690), (398, 49600), (400, 49352), (496, 39800), (620, 31840), (640, 30845), (775, 25472), (796, 24800), (800, 24676), (992, 19900), (995, 19840), (1240, 15920), (1550, 12736), (1592, 12400), (1600, 12338), (1984, 9950), (1990, 9920), (2480, 7960), (3100, 6368), (3184, 6200), (3200, 6169), (3968, 4975), (3980, 4960)]