20783420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2801}}^1$

素因数の和:2870

約数の個数: 48

約数和(自身を含む): 50839488

約数和(自身を除く): 30056068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 2801, 3710, 5602, 7420, 11204, 14005, 19607, 28010, 39214, 56020, 78428, 98035, 148453, 196070, 296906, 392140, 593812, 742265, 1039171, 1484530, 2078342, 2969060, 4156684, 5195855, 10391710, 20783420]

約数ペア:

[(1, 20783420), (2, 10391710), (4, 5195855), (5, 4156684), (7, 2969060), (10, 2078342), (14, 1484530), (20, 1039171), (28, 742265), (35, 593812), (53, 392140), (70, 296906), (106, 196070), (140, 148453), (212, 98035), (265, 78428), (371, 56020), (530, 39214), (742, 28010), (1060, 19607), (1484, 14005), (1855, 11204), (2801, 7420), (3710, 5602)]