20219560

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12329}}^1$

素因数の和:12381

約数の個数: 32

約数和(自身を含む): 46607400

約数和(自身を除く): 26387840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12329, 24658, 49316, 61645, 98632, 123290, 246580, 493160, 505489, 1010978, 2021956, 2527445, 4043912, 5054890, 10109780, 20219560]

約数ペア:

[(1, 20219560), (2, 10109780), (4, 5054890), (5, 4043912), (8, 2527445), (10, 2021956), (20, 1010978), (40, 505489), (41, 493160), (82, 246580), (164, 123290), (205, 98632), (328, 61645), (410, 49316), (820, 24658), (1640, 12329)]