78611820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187171}}^1$

素因数の和:187190

約数の個数: 48

約数和(自身を含む): 251559168

約数和(自身を除く): 172947348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 187171, 374342, 561513, 748684, 935855, 1123026, 1310197, 1871710, 2246052, 2620394, 2807565, 3743420, 3930591, 5240788, 5615130, 6550985, 7861182, 11230260, 13101970, 15722364, 19652955, 26203940, 39305910, 78611820]

約数ペア:

[(1, 78611820), (2, 39305910), (3, 26203940), (4, 19652955), (5, 15722364), (6, 13101970), (7, 11230260), (10, 7861182), (12, 6550985), (14, 5615130), (15, 5240788), (20, 3930591), (21, 3743420), (28, 2807565), (30, 2620394), (35, 2246052), (42, 1871710), (60, 1310197), (70, 1123026), (84, 935855), (105, 748684), (140, 561513), (210, 374342), (420, 187171)]