31209880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1277}}^1$

素因数の和:1348

約数の個数: 64

約数和(自身を含む): 77293440

約数和(自身を除く): 46083560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 940, 1222, 1277, 1880, 2444, 2554, 3055, 4888, 5108, 6110, 6385, 10216, 12220, 12770, 16601, 24440, 25540, 33202, 51080, 60019, 66404, 83005, 120038, 132808, 166010, 240076, 300095, 332020, 480152, 600190, 664040, 780247, 1200380, 1560494, 2400760, 3120988, 3901235, 6241976, 7802470, 15604940, 31209880]

約数ペア:

[(1, 31209880), (2, 15604940), (4, 7802470), (5, 6241976), (8, 3901235), (10, 3120988), (13, 2400760), (20, 1560494), (26, 1200380), (40, 780247), (47, 664040), (52, 600190), (65, 480152), (94, 332020), (104, 300095), (130, 240076), (188, 166010), (235, 132808), (260, 120038), (376, 83005), (470, 66404), (520, 60019), (611, 51080), (940, 33202), (1222, 25540), (1277, 24440), (1880, 16601), (2444, 12770), (2554, 12220), (3055, 10216), (4888, 6385), (5108, 6110)]