20307820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2111}}^1$

素因数の和:2170

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 26882708

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2111, 2405, 4222, 4810, 8444, 9620, 10555, 21110, 27443, 42220, 54886, 78107, 109772, 137215, 156214, 274430, 312428, 390535, 548860, 781070, 1015391, 1562140, 2030782, 4061564, 5076955, 10153910, 20307820]

約数ペア:

[(1, 20307820), (2, 10153910), (4, 5076955), (5, 4061564), (10, 2030782), (13, 1562140), (20, 1015391), (26, 781070), (37, 548860), (52, 390535), (65, 312428), (74, 274430), (130, 156214), (148, 137215), (185, 109772), (260, 78107), (370, 54886), (481, 42220), (740, 27443), (962, 21110), (1924, 10555), (2111, 9620), (2405, 8444), (4222, 4810)]