19145980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{839}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 46287360

約数和(自身を除く): 27141380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 839, 1141, 1630, 1678, 2282, 3260, 3356, 4195, 4564, 5705, 5873, 8390, 11410, 11746, 16780, 22820, 23492, 29365, 58730, 117460, 136757, 273514, 547028, 683785, 957299, 1367570, 1914598, 2735140, 3829196, 4786495, 9572990, 19145980]

約数ペア:

[(1, 19145980), (2, 9572990), (4, 4786495), (5, 3829196), (7, 2735140), (10, 1914598), (14, 1367570), (20, 957299), (28, 683785), (35, 547028), (70, 273514), (140, 136757), (163, 117460), (326, 58730), (652, 29365), (815, 23492), (839, 22820), (1141, 16780), (1630, 11746), (1678, 11410), (2282, 8390), (3260, 5873), (3356, 5705), (4195, 4564)]