20720252

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18049}}^1$

素因数の和:18101

約数の個数: 24

約数和(自身を含む): 42453600

約数和(自身を除く): 21733348

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18049, 36098, 72196, 126343, 252686, 505372, 740009, 1480018, 2960036, 5180063, 10360126, 20720252]

約数ペア:

[(1, 20720252), (2, 10360126), (4, 5180063), (7, 2960036), (14, 1480018), (28, 740009), (41, 505372), (82, 252686), (164, 126343), (287, 72196), (574, 36098), (1148, 18049)]