30978740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{6271}}^1$

素因数の和:6312

約数の個数: 48

約数和(自身を含む): 73758720

約数和(自身を除く): 42779980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 6271, 12542, 25084, 31355, 62710, 81523, 119149, 125420, 163046, 238298, 326092, 407615, 476596, 595745, 815230, 1191490, 1548937, 1630460, 2382980, 3097874, 6195748, 7744685, 15489370, 30978740]

約数ペア:

[(1, 30978740), (2, 15489370), (4, 7744685), (5, 6195748), (10, 3097874), (13, 2382980), (19, 1630460), (20, 1548937), (26, 1191490), (38, 815230), (52, 595745), (65, 476596), (76, 407615), (95, 326092), (130, 238298), (190, 163046), (247, 125420), (260, 119149), (380, 81523), (494, 62710), (988, 31355), (1235, 25084), (2470, 12542), (4940, 6271)]