20016855

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4783}}^1$

素因数の和:4828

約数の個数: 32

約数和(自身を含む): 36741120

約数和(自身を除く): 16724265

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 4783, 14349, 23915, 43047, 71745, 129141, 148273, 215235, 444819, 645705, 741365, 1334457, 2224095, 4003371, 6672285, 20016855]

約数ペア:

[(1, 20016855), (3, 6672285), (5, 4003371), (9, 2224095), (15, 1334457), (27, 741365), (31, 645705), (45, 444819), (93, 215235), (135, 148273), (155, 129141), (279, 71745), (465, 43047), (837, 23915), (1395, 14349), (4185, 4783)]