20379100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4159}}^1$

素因数の和:4187

約数の個数: 54

約数和(自身を含む): 51455040

約数和(自身を除く): 31075940

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, 4159, 4900, 8318, 16636, 20795, 29113, 41590, 58226, 83180, 103975, 116452, 145565, 203791, 207950, 291130, 407582, 415900, 582260, 727825, 815164, 1018955, 1455650, 2037910, 2911300, 4075820, 5094775, 10189550, 20379100]

約数ペア:

[(1, 20379100), (2, 10189550), (4, 5094775), (5, 4075820), (7, 2911300), (10, 2037910), (14, 1455650), (20, 1018955), (25, 815164), (28, 727825), (35, 582260), (49, 415900), (50, 407582), (70, 291130), (98, 207950), (100, 203791), (140, 145565), (175, 116452), (196, 103975), (245, 83180), (350, 58226), (490, 41590), (700, 29113), (980, 20795), (1225, 16636), (2450, 8318), (4159, 4900)]