78980380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{44371}}^1$

素因数の和:44469

約数の個数: 24

約数和(自身を含む): 167726160

約数和(自身を除く): 88745780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 44371, 88742, 177484, 221855, 443710, 887420, 3949019, 7898038, 15796076, 19745095, 39490190, 78980380]

約数ペア:

[(1, 78980380), (2, 39490190), (4, 19745095), (5, 15796076), (10, 7898038), (20, 3949019), (89, 887420), (178, 443710), (356, 221855), (445, 177484), (890, 88742), (1780, 44371)]