19828840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15991}}^1$

素因数の和:16033

約数の個数: 32

約数和(自身を含む): 46056960

約数和(自身を除く): 26228120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15991, 31982, 63964, 79955, 127928, 159910, 319820, 495721, 639640, 991442, 1982884, 2478605, 3965768, 4957210, 9914420, 19828840]

約数ペア:

[(1, 19828840), (2, 9914420), (4, 4957210), (5, 3965768), (8, 2478605), (10, 1982884), (20, 991442), (31, 639640), (40, 495721), (62, 319820), (124, 159910), (155, 127928), (248, 79955), (310, 63964), (620, 31982), (1240, 15991)]