20901398

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1657}}^1$

素因数の和:1736

約数の個数: 32

約数和(自身を含む): 38677824

約数和(自身を除く): 17776426

約数列:

[1, 2, 7, 14, 17, 34, 53, 106, 119, 238, 371, 742, 901, 1657, 1802, 3314, 6307, 11599, 12614, 23198, 28169, 56338, 87821, 175642, 197183, 394366, 614747, 1229494, 1492957, 2985914, 10450699, 20901398]

約数ペア:

[(1, 20901398), (2, 10450699), (7, 2985914), (14, 1492957), (17, 1229494), (34, 614747), (53, 394366), (106, 197183), (119, 175642), (238, 87821), (371, 56338), (742, 28169), (901, 23198), (1657, 12614), (1802, 11599), (3314, 6307)]