20006960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 50461056

約数和(自身を除く): 30454096

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 47, 68, 80, 85, 94, 136, 170, 188, 235, 272, 313, 340, 376, 470, 626, 680, 752, 799, 940, 1252, 1360, 1565, 1598, 1880, 2504, 3130, 3196, 3760, 3995, 5008, 5321, 6260, 6392, 7990, 10642, 12520, 12784, 14711, 15980, 21284, 25040, 26605, 29422, 31960, 42568, 53210, 58844, 63920, 73555, 85136, 106420, 117688, 147110, 212840, 235376, 250087, 294220, 425680, 500174, 588440, 1000348, 1176880, 1250435, 2000696, 2500870, 4001392, 5001740, 10003480, 20006960]

約数ペア:

[(1, 20006960), (2, 10003480), (4, 5001740), (5, 4001392), (8, 2500870), (10, 2000696), (16, 1250435), (17, 1176880), (20, 1000348), (34, 588440), (40, 500174), (47, 425680), (68, 294220), (80, 250087), (85, 235376), (94, 212840), (136, 147110), (170, 117688), (188, 106420), (235, 85136), (272, 73555), (313, 63920), (340, 58844), (376, 53210), (470, 42568), (626, 31960), (680, 29422), (752, 26605), (799, 25040), (940, 21284), (1252, 15980), (1360, 14711), (1565, 12784), (1598, 12520), (1880, 10642), (2504, 7990), (3130, 6392), (3196, 6260), (3760, 5321), (3995, 5008)]