20505446

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 36541440

約数和(自身を除く): 16035994

約数列:

[1, 2, 13, 19, 26, 31, 38, 62, 103, 169, 206, 247, 338, 403, 494, 589, 806, 1178, 1339, 1957, 2678, 3193, 3211, 3914, 5239, 6386, 6422, 7657, 10478, 15314, 17407, 25441, 34814, 41509, 50882, 60667, 83018, 99541, 121334, 199082, 330733, 539617, 661466, 788671, 1079234, 1577342, 10252723, 20505446]

約数ペア:

[(1, 20505446), (2, 10252723), (13, 1577342), (19, 1079234), (26, 788671), (31, 661466), (38, 539617), (62, 330733), (103, 199082), (169, 121334), (206, 99541), (247, 83018), (338, 60667), (403, 50882), (494, 41509), (589, 34814), (806, 25441), (1178, 17407), (1339, 15314), (1957, 10478), (2678, 7657), (3193, 6422), (3211, 6386), (3914, 5239)]