20865320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1733}}^1$

素因数の和:1794

約数の個数: 64

約数和(自身を含む): 54933120

約数和(自身を除く): 34067800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 1733, 2408, 3010, 3466, 6020, 6932, 8665, 12040, 12131, 13864, 17330, 24262, 34660, 48524, 60655, 69320, 74519, 97048, 121310, 149038, 242620, 298076, 372595, 485240, 521633, 596152, 745190, 1043266, 1490380, 2086532, 2608165, 2980760, 4173064, 5216330, 10432660, 20865320]

約数ペア:

[(1, 20865320), (2, 10432660), (4, 5216330), (5, 4173064), (7, 2980760), (8, 2608165), (10, 2086532), (14, 1490380), (20, 1043266), (28, 745190), (35, 596152), (40, 521633), (43, 485240), (56, 372595), (70, 298076), (86, 242620), (140, 149038), (172, 121310), (215, 97048), (280, 74519), (301, 69320), (344, 60655), (430, 48524), (602, 34660), (860, 24262), (1204, 17330), (1505, 13864), (1720, 12131), (1733, 12040), (2408, 8665), (3010, 6932), (3466, 6020)]