20349700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4153}}^1$

素因数の和:4181

約数の個数: 54

約数和(自身を含む): 51380826

約数和(自身を除く): 31031126

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4153, 4900, 8306, 16612, 20765, 29071, 41530, 58142, 83060, 103825, 116284, 145355, 203497, 207650, 290710, 406994, 415300, 581420, 726775, 813988, 1017485, 1453550, 2034970, 2907100, 4069940, 5087425, 10174850, 20349700]

約数ペア:

[(1, 20349700), (2, 10174850), (4, 5087425), (5, 4069940), (7, 2907100), (10, 2034970), (14, 1453550), (20, 1017485), (25, 813988), (28, 726775), (35, 581420), (49, 415300), (50, 406994), (70, 290710), (98, 207650), (100, 203497), (140, 145355), (175, 116284), (196, 103825), (245, 83060), (350, 58142), (490, 41530), (700, 29071), (980, 20765), (1225, 16612), (2450, 8306), (4153, 4900)]