20360500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1009

約数の個数: 48

約数和(自身を含む): 45549504

約数和(自身を除く): 25189004

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 947, 1075, 1894, 2150, 3788, 4300, 4735, 5375, 9470, 10750, 18940, 21500, 23675, 40721, 47350, 81442, 94700, 118375, 162884, 203605, 236750, 407210, 473500, 814420, 1018025, 2036050, 4072100, 5090125, 10180250, 20360500]

約数ペア:

[(1, 20360500), (2, 10180250), (4, 5090125), (5, 4072100), (10, 2036050), (20, 1018025), (25, 814420), (43, 473500), (50, 407210), (86, 236750), (100, 203605), (125, 162884), (172, 118375), (215, 94700), (250, 81442), (430, 47350), (500, 40721), (860, 23675), (947, 21500), (1075, 18940), (1894, 10750), (2150, 9470), (3788, 5375), (4300, 4735)]