16881970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 35754048

約数和(自身を除く): 18872078

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 131, 245, 262, 263, 490, 526, 655, 917, 1310, 1315, 1834, 1841, 2630, 3682, 4585, 6419, 9170, 9205, 12838, 12887, 18410, 25774, 32095, 34453, 64190, 64435, 68906, 128870, 172265, 241171, 344530, 482342, 1205855, 1688197, 2411710, 3376394, 8440985, 16881970]

約数ペア:

[(1, 16881970), (2, 8440985), (5, 3376394), (7, 2411710), (10, 1688197), (14, 1205855), (35, 482342), (49, 344530), (70, 241171), (98, 172265), (131, 128870), (245, 68906), (262, 64435), (263, 64190), (490, 34453), (526, 32095), (655, 25774), (917, 18410), (1310, 12887), (1315, 12838), (1834, 9205), (1841, 9170), (2630, 6419), (3682, 4585)]