20987892

素因数分解:

$2^2\times 3^2\times {\mathrm{167}}^1\times {\mathrm{3491}}^1$

素因数の和:3668

約数の個数: 36

約数和(自身を含む): 53385696

約数和(自身を除く): 32397804

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 167, 334, 501, 668, 1002, 1503, 2004, 3006, 3491, 6012, 6982, 10473, 13964, 20946, 31419, 41892, 62838, 125676, 582997, 1165994, 1748991, 2331988, 3497982, 5246973, 6995964, 10493946, 20987892]

約数ペア:

[(1, 20987892), (2, 10493946), (3, 6995964), (4, 5246973), (6, 3497982), (9, 2331988), (12, 1748991), (18, 1165994), (36, 582997), (167, 125676), (334, 62838), (501, 41892), (668, 31419), (1002, 20946), (1503, 13964), (2004, 10473), (3006, 6982), (3491, 6012)]