31438980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{449}}^1$

素因数の和:853

約数の個数: 72

約数和(自身を含む): 95823000

約数和(自身を除く): 64384020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 449, 778, 898, 1167, 1347, 1556, 1796, 1945, 2245, 2334, 2694, 3501, 3890, 4041, 4490, 4668, 5388, 5835, 6735, 7002, 7780, 8082, 8980, 11670, 13470, 14004, 16164, 17505, 20205, 23340, 26940, 35010, 40410, 70020, 80820, 174661, 349322, 523983, 698644, 873305, 1047966, 1571949, 1746610, 2095932, 2619915, 3143898, 3493220, 5239830, 6287796, 7859745, 10479660, 15719490, 31438980]

約数ペア:

[(1, 31438980), (2, 15719490), (3, 10479660), (4, 7859745), (5, 6287796), (6, 5239830), (9, 3493220), (10, 3143898), (12, 2619915), (15, 2095932), (18, 1746610), (20, 1571949), (30, 1047966), (36, 873305), (45, 698644), (60, 523983), (90, 349322), (180, 174661), (389, 80820), (449, 70020), (778, 40410), (898, 35010), (1167, 26940), (1347, 23340), (1556, 20205), (1796, 17505), (1945, 16164), (2245, 14004), (2334, 13470), (2694, 11670), (3501, 8980), (3890, 8082), (4041, 7780), (4490, 7002), (4668, 6735), (5388, 5835)]