42890940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{997}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 130777920

約数和(自身を除く): 87886980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 717, 956, 997, 1195, 1434, 1994, 2151, 2390, 2868, 2991, 3585, 3988, 4302, 4780, 4985, 5982, 7170, 8604, 8973, 9970, 10755, 11964, 14340, 14955, 17946, 19940, 21510, 29910, 35892, 43020, 44865, 59820, 89730, 179460, 238283, 476566, 714849, 953132, 1191415, 1429698, 2144547, 2382830, 2859396, 3574245, 4289094, 4765660, 7148490, 8578188, 10722735, 14296980, 21445470, 42890940]

約数ペア:

[(1, 42890940), (2, 21445470), (3, 14296980), (4, 10722735), (5, 8578188), (6, 7148490), (9, 4765660), (10, 4289094), (12, 3574245), (15, 2859396), (18, 2382830), (20, 2144547), (30, 1429698), (36, 1191415), (45, 953132), (60, 714849), (90, 476566), (180, 238283), (239, 179460), (478, 89730), (717, 59820), (956, 44865), (997, 43020), (1195, 35892), (1434, 29910), (1994, 21510), (2151, 19940), (2390, 17946), (2868, 14955), (2991, 14340), (3585, 11964), (3988, 10755), (4302, 9970), (4780, 8973), (4985, 8604), (5982, 7170)]