21642790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{727}}^1$

素因数の和:976

約数の個数: 32

約数和(自身を含む): 42194880

約数和(自身を除く): 20552090

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 229, 458, 727, 1145, 1454, 2290, 2977, 3635, 5954, 7270, 9451, 14885, 18902, 29770, 47255, 94510, 166483, 332966, 832415, 1664830, 2164279, 4328558, 10821395, 21642790]

約数ペア:

[(1, 21642790), (2, 10821395), (5, 4328558), (10, 2164279), (13, 1664830), (26, 832415), (65, 332966), (130, 166483), (229, 94510), (458, 47255), (727, 29770), (1145, 18902), (1454, 14885), (2290, 9451), (2977, 7270), (3635, 5954)]