20494928

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{499}}^1$

素因数の和:675

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 21913072

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 151, 272, 302, 499, 604, 998, 1208, 1996, 2416, 2567, 3992, 5134, 7984, 8483, 10268, 16966, 20536, 33932, 41072, 67864, 75349, 135728, 150698, 301396, 602792, 1205584, 1280933, 2561866, 5123732, 10247464, 20494928]

約数ペア:

[(1, 20494928), (2, 10247464), (4, 5123732), (8, 2561866), (16, 1280933), (17, 1205584), (34, 602792), (68, 301396), (136, 150698), (151, 135728), (272, 75349), (302, 67864), (499, 41072), (604, 33932), (998, 20536), (1208, 16966), (1996, 10268), (2416, 8483), (2567, 7984), (3992, 5134)]