19976528

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{8731}}^1$

素因数の和:8763

約数の個数: 40

約数和(自身を含む): 45476256

約数和(自身を除く): 25499728

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 8731, 17462, 34924, 69848, 96041, 113503, 139696, 192082, 227006, 384164, 454012, 768328, 908024, 1248533, 1536656, 1816048, 2497066, 4994132, 9988264, 19976528]

約数ペア:

[(1, 19976528), (2, 9988264), (4, 4994132), (8, 2497066), (11, 1816048), (13, 1536656), (16, 1248533), (22, 908024), (26, 768328), (44, 454012), (52, 384164), (88, 227006), (104, 192082), (143, 139696), (176, 113503), (208, 96041), (286, 69848), (572, 34924), (1144, 17462), (2288, 8731)]