21445470

素因数分解:

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

素因数の和:1249

約数の個数: 48

約数和(自身を含む): 56047680

約数和(自身を除く): 34602210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 239, 478, 717, 997, 1195, 1434, 1994, 2151, 2390, 2991, 3585, 4302, 4985, 5982, 7170, 8973, 9970, 10755, 14955, 17946, 21510, 29910, 44865, 89730, 238283, 476566, 714849, 1191415, 1429698, 2144547, 2382830, 3574245, 4289094, 7148490, 10722735, 21445470]

約数ペア:

[(1, 21445470), (2, 10722735), (3, 7148490), (5, 4289094), (6, 3574245), (9, 2382830), (10, 2144547), (15, 1429698), (18, 1191415), (30, 714849), (45, 476566), (90, 238283), (239, 89730), (478, 44865), (717, 29910), (997, 21510), (1195, 17946), (1434, 14955), (1994, 10755), (2151, 9970), (2390, 8973), (2991, 7170), (3585, 5982), (4302, 4985)]