20865015

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14957}}^1$

素因数の和:14999

約数の個数: 24

約数和(自身を含む): 37335168

約数和(自身を除く): 16470153

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14957, 44871, 74785, 134613, 224355, 463667, 673065, 1391001, 2318335, 4173003, 6955005, 20865015]

約数ペア:

[(1, 20865015), (3, 6955005), (5, 4173003), (9, 2318335), (15, 1391001), (31, 673065), (45, 463667), (93, 224355), (155, 134613), (279, 74785), (465, 44871), (1395, 14957)]