20249008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1453}}^1$

素因数の和:1541

約数の個数: 40

約数和(自身を含む): 42910448

約数和(自身を除く): 22661440

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1453, 1742, 2906, 3484, 5812, 6968, 11624, 13936, 18889, 23248, 37778, 75556, 97351, 151112, 194702, 302224, 389404, 778808, 1265563, 1557616, 2531126, 5062252, 10124504, 20249008]

約数ペア:

[(1, 20249008), (2, 10124504), (4, 5062252), (8, 2531126), (13, 1557616), (16, 1265563), (26, 778808), (52, 389404), (67, 302224), (104, 194702), (134, 151112), (208, 97351), (268, 75556), (536, 37778), (871, 23248), (1072, 18889), (1453, 13936), (1742, 11624), (2906, 6968), (3484, 5812)]