978889220

素因数分解:

$2^2\times 5^1\times {\mathrm{1831}}^1\times {\mathrm{26731}}^1$

素因数の和:28571

約数の個数: 24

約数和(自身を含む): 2056867008

約数和(自身を除く): 1077977788

約数列:

[1, 2, 4, 5, 10, 20, 1831, 3662, 7324, 9155, 18310, 26731, 36620, 53462, 106924, 133655, 267310, 534620, 48944461, 97888922, 195777844, 244722305, 489444610, 978889220]

約数ペア:

[(1, 978889220), (2, 489444610), (4, 244722305), (5, 195777844), (10, 97888922), (20, 48944461), (1831, 534620), (3662, 267310), (7324, 133655), (9155, 106924), (18310, 53462), (26731, 36620)]