31486520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{401}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 76991040

約数和(自身を除く): 45504520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 151, 260, 302, 401, 520, 604, 755, 802, 1208, 1510, 1604, 1963, 2005, 3020, 3208, 3926, 4010, 5213, 6040, 7852, 8020, 9815, 10426, 15704, 16040, 19630, 20852, 26065, 39260, 41704, 52130, 60551, 78520, 104260, 121102, 208520, 242204, 302755, 484408, 605510, 787163, 1211020, 1574326, 2422040, 3148652, 3935815, 6297304, 7871630, 15743260, 31486520]

約数ペア:

[(1, 31486520), (2, 15743260), (4, 7871630), (5, 6297304), (8, 3935815), (10, 3148652), (13, 2422040), (20, 1574326), (26, 1211020), (40, 787163), (52, 605510), (65, 484408), (104, 302755), (130, 242204), (151, 208520), (260, 121102), (302, 104260), (401, 78520), (520, 60551), (604, 52130), (755, 41704), (802, 39260), (1208, 26065), (1510, 20852), (1604, 19630), (1963, 16040), (2005, 15704), (3020, 10426), (3208, 9815), (3926, 8020), (4010, 7852), (5213, 6040)]