18711290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4643}}^1$

素因数の和:4694

約数の個数: 32

約数和(自身を含む): 37449216

約数和(自身を除く): 18737926

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4643, 9286, 23215, 46430, 60359, 120718, 143933, 287866, 301795, 603590, 719665, 1439330, 1871129, 3742258, 9355645, 18711290]

約数ペア:

[(1, 18711290), (2, 9355645), (5, 3742258), (10, 1871129), (13, 1439330), (26, 719665), (31, 603590), (62, 301795), (65, 287866), (130, 143933), (155, 120718), (310, 60359), (403, 46430), (806, 23215), (2015, 9286), (4030, 4643)]