1988600

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 4728120

約数和(自身を除く): 2739520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 163, 200, 244, 305, 326, 488, 610, 652, 815, 1220, 1304, 1525, 1630, 2440, 3050, 3260, 4075, 6100, 6520, 8150, 9943, 12200, 16300, 19886, 32600, 39772, 49715, 79544, 99430, 198860, 248575, 397720, 497150, 994300, 1988600]

約数ペア:

[(1, 1988600), (2, 994300), (4, 497150), (5, 397720), (8, 248575), (10, 198860), (20, 99430), (25, 79544), (40, 49715), (50, 39772), (61, 32600), (100, 19886), (122, 16300), (163, 12200), (200, 9943), (244, 8150), (305, 6520), (326, 6100), (488, 4075), (610, 3260), (652, 3050), (815, 2440), (1220, 1630), (1304, 1525)]