2019921808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{25939}}^1$

素因数の和:26135

約数の個数: 40

約数和(自身を含む): 4065731840

約数和(自身を除く): 2045810032

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 157, 248, 314, 496, 628, 1256, 2512, 4867, 9734, 19468, 25939, 38936, 51878, 77872, 103756, 207512, 415024, 804109, 1608218, 3216436, 4072423, 6432872, 8144846, 12865744, 16289692, 32579384, 65158768, 126245113, 252490226, 504980452, 1009960904, 2019921808]

約数ペア:

[(1, 2019921808), (2, 1009960904), (4, 504980452), (8, 252490226), (16, 126245113), (31, 65158768), (62, 32579384), (124, 16289692), (157, 12865744), (248, 8144846), (314, 6432872), (496, 4072423), (628, 3216436), (1256, 1608218), (2512, 804109), (4867, 415024), (9734, 207512), (19468, 103756), (25939, 77872), (38936, 51878)]