19975983

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 29376000

約数和(自身を除く): 9400017

約数列:

[1, 3, 23, 29, 67, 69, 87, 149, 201, 447, 667, 1541, 1943, 2001, 3427, 4321, 4623, 5829, 9983, 10281, 12963, 29949, 44689, 99383, 134067, 229609, 289507, 298149, 688827, 868521, 6658661, 19975983]

約数ペア:

[(1, 19975983), (3, 6658661), (23, 868521), (29, 688827), (67, 298149), (69, 289507), (87, 229609), (149, 134067), (201, 99383), (447, 44689), (667, 29949), (1541, 12963), (1943, 10281), (2001, 9983), (3427, 5829), (4321, 4623)]