72217580

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{10909}}^1$

素因数の和:11249

約数の個数: 24

約数和(自身を含む): 152129040

約数和(自身を除く): 79911460

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 10909, 21818, 43636, 54545, 109090, 218180, 3610879, 7221758, 14443516, 18054395, 36108790, 72217580]

約数ペア:

[(1, 72217580), (2, 36108790), (4, 18054395), (5, 14443516), (10, 7221758), (20, 3610879), (331, 218180), (662, 109090), (1324, 54545), (1655, 43636), (3310, 21818), (6620, 10909)]