19949512

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 42301980

約数和(自身を除く): 22352468

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 121, 148, 242, 296, 407, 484, 557, 814, 968, 1114, 1628, 2228, 3256, 4456, 4477, 6127, 8954, 12254, 17908, 20609, 24508, 35816, 41218, 49016, 67397, 82436, 134794, 164872, 226699, 269588, 453398, 539176, 906796, 1813592, 2493689, 4987378, 9974756, 19949512]

約数ペア:

[(1, 19949512), (2, 9974756), (4, 4987378), (8, 2493689), (11, 1813592), (22, 906796), (37, 539176), (44, 453398), (74, 269588), (88, 226699), (121, 164872), (148, 134794), (242, 82436), (296, 67397), (407, 49016), (484, 41218), (557, 35816), (814, 24508), (968, 20609), (1114, 17908), (1628, 12254), (2228, 8954), (3256, 6127), (4456, 4477)]