31016920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 76788000

約数和(自身を除く): 45771080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 440, 449, 628, 785, 898, 1256, 1570, 1727, 1796, 2245, 3140, 3454, 3592, 4490, 4939, 6280, 6908, 8635, 8980, 9878, 13816, 17270, 17960, 19756, 24695, 34540, 39512, 49390, 69080, 70493, 98780, 140986, 197560, 281972, 352465, 563944, 704930, 775423, 1409860, 1550846, 2819720, 3101692, 3877115, 6203384, 7754230, 15508460, 31016920]

約数ペア:

[(1, 31016920), (2, 15508460), (4, 7754230), (5, 6203384), (8, 3877115), (10, 3101692), (11, 2819720), (20, 1550846), (22, 1409860), (40, 775423), (44, 704930), (55, 563944), (88, 352465), (110, 281972), (157, 197560), (220, 140986), (314, 98780), (440, 70493), (449, 69080), (628, 49390), (785, 39512), (898, 34540), (1256, 24695), (1570, 19756), (1727, 17960), (1796, 17270), (2245, 13816), (3140, 9878), (3454, 8980), (3592, 8635), (4490, 6908), (4939, 6280)]