20407504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2393}}^1$

素因数の和:2455

約数の個数: 40

約数和(自身を含む): 43637832

約数和(自身を除く): 23230328

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2393, 4264, 4786, 8528, 9572, 19144, 31109, 38288, 62218, 98113, 124436, 196226, 248872, 392452, 497744, 784904, 1275469, 1569808, 2550938, 5101876, 10203752, 20407504]

約数ペア:

[(1, 20407504), (2, 10203752), (4, 5101876), (8, 2550938), (13, 1569808), (16, 1275469), (26, 784904), (41, 497744), (52, 392452), (82, 248872), (104, 196226), (164, 124436), (208, 98113), (328, 62218), (533, 38288), (656, 31109), (1066, 19144), (2132, 9572), (2393, 8528), (4264, 4786)]