19768720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8521}}^1$

素因数の和:8563

約数の個数: 40

約数和(自身を含む): 47552760

約数和(自身を除く): 27784040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8521, 17042, 34084, 42605, 68168, 85210, 136336, 170420, 247109, 340840, 494218, 681680, 988436, 1235545, 1976872, 2471090, 3953744, 4942180, 9884360, 19768720]

約数ペア:

[(1, 19768720), (2, 9884360), (4, 4942180), (5, 3953744), (8, 2471090), (10, 1976872), (16, 1235545), (20, 988436), (29, 681680), (40, 494218), (58, 340840), (80, 247109), (116, 170420), (145, 136336), (232, 85210), (290, 68168), (464, 42605), (580, 34084), (1160, 17042), (2320, 8521)]