20604220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11321}}^1$

素因数の和:11350

約数の個数: 48

約数和(自身を含む): 53258688

約数和(自身を除く): 32654468

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11321, 22642, 45284, 56605, 79247, 113210, 147173, 158494, 226420, 294346, 316988, 396235, 588692, 735865, 792470, 1030211, 1471730, 1584940, 2060422, 2943460, 4120844, 5151055, 10302110, 20604220]

約数ペア:

[(1, 20604220), (2, 10302110), (4, 5151055), (5, 4120844), (7, 2943460), (10, 2060422), (13, 1584940), (14, 1471730), (20, 1030211), (26, 792470), (28, 735865), (35, 588692), (52, 396235), (65, 316988), (70, 294346), (91, 226420), (130, 158494), (140, 147173), (182, 113210), (260, 79247), (364, 56605), (455, 45284), (910, 22642), (1820, 11321)]