19993636

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 39639040

約数和(自身を除く): 19645404

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 79, 124, 157, 158, 314, 316, 403, 628, 806, 1027, 1612, 2041, 2054, 2449, 4082, 4108, 4867, 4898, 8164, 9734, 9796, 12403, 19468, 24806, 31837, 49612, 63271, 63674, 126542, 127348, 161239, 253084, 322478, 384493, 644956, 768986, 1537972, 4998409, 9996818, 19993636]

約数ペア:

[(1, 19993636), (2, 9996818), (4, 4998409), (13, 1537972), (26, 768986), (31, 644956), (52, 384493), (62, 322478), (79, 253084), (124, 161239), (157, 127348), (158, 126542), (314, 63674), (316, 63271), (403, 49612), (628, 31837), (806, 24806), (1027, 19468), (1612, 12403), (2041, 9796), (2054, 9734), (2449, 8164), (4082, 4898), (4108, 4867)]