19704464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1553}}^1$

素因数の和:1635

約数の個数: 40

約数和(自身を含む): 41815032

約数和(自身を除く): 22110568

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1553, 1586, 3106, 3172, 6212, 6344, 12424, 12688, 20189, 24848, 40378, 80756, 94733, 161512, 189466, 323024, 378932, 757864, 1231529, 1515728, 2463058, 4926116, 9852232, 19704464]

約数ペア:

[(1, 19704464), (2, 9852232), (4, 4926116), (8, 2463058), (13, 1515728), (16, 1231529), (26, 757864), (52, 378932), (61, 323024), (104, 189466), (122, 161512), (208, 94733), (244, 80756), (488, 40378), (793, 24848), (976, 20189), (1553, 12688), (1586, 12424), (3106, 6344), (3172, 6212)]