20729688

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{757}}^1$

素因数の和:936

約数の個数: 64

約数和(自身を含む): 59669760

約数和(自身を除く): 38940072

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 163, 168, 326, 489, 652, 757, 978, 1141, 1304, 1514, 1956, 2271, 2282, 3028, 3423, 3912, 4542, 4564, 5299, 6056, 6846, 9084, 9128, 10598, 13692, 15897, 18168, 21196, 27384, 31794, 42392, 63588, 123391, 127176, 246782, 370173, 493564, 740346, 863737, 987128, 1480692, 1727474, 2591211, 2961384, 3454948, 5182422, 6909896, 10364844, 20729688]

約数ペア:

[(1, 20729688), (2, 10364844), (3, 6909896), (4, 5182422), (6, 3454948), (7, 2961384), (8, 2591211), (12, 1727474), (14, 1480692), (21, 987128), (24, 863737), (28, 740346), (42, 493564), (56, 370173), (84, 246782), (163, 127176), (168, 123391), (326, 63588), (489, 42392), (652, 31794), (757, 27384), (978, 21196), (1141, 18168), (1304, 15897), (1514, 13692), (1956, 10598), (2271, 9128), (2282, 9084), (3028, 6846), (3423, 6056), (3912, 5299), (4542, 4564)]