81011290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{20719}}^1$

素因数の和:20766

約数の個数: 32

約数和(自身を含む): 161118720

約数和(自身を除く): 80107430

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 170, 230, 391, 782, 1955, 3910, 20719, 41438, 103595, 207190, 352223, 476537, 704446, 953074, 1761115, 2382685, 3522230, 4765370, 8101129, 16202258, 40505645, 81011290]

約数ペア:

[(1, 81011290), (2, 40505645), (5, 16202258), (10, 8101129), (17, 4765370), (23, 3522230), (34, 2382685), (46, 1761115), (85, 953074), (115, 704446), (170, 476537), (230, 352223), (391, 207190), (782, 103595), (1955, 41438), (3910, 20719)]