20298800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1637}}^1$

素因数の和:1686

約数の個数: 60

約数和(自身を含む): 50371776

約数和(自身を除く): 30072976

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, 1637, 2480, 3100, 3274, 6200, 6548, 8185, 12400, 13096, 16370, 26192, 32740, 40925, 50747, 65480, 81850, 101494, 130960, 163700, 202988, 253735, 327400, 405976, 507470, 654800, 811952, 1014940, 1268675, 2029880, 2537350, 4059760, 5074700, 10149400, 20298800]

約数ペア:

[(1, 20298800), (2, 10149400), (4, 5074700), (5, 4059760), (8, 2537350), (10, 2029880), (16, 1268675), (20, 1014940), (25, 811952), (31, 654800), (40, 507470), (50, 405976), (62, 327400), (80, 253735), (100, 202988), (124, 163700), (155, 130960), (200, 101494), (248, 81850), (310, 65480), (400, 50747), (496, 40925), (620, 32740), (775, 26192), (1240, 16370), (1550, 13096), (1637, 12400), (2480, 8185), (3100, 6548), (3274, 6200)]