78779240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22129}}^1$

素因数の和:22229

約数の個数: 32

約数和(自身を含む): 179253000

約数和(自身を除く): 100473760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 22129, 44258, 88516, 110645, 177032, 221290, 442580, 885160, 1969481, 3938962, 7877924, 9847405, 15755848, 19694810, 39389620, 78779240]

約数ペア:

[(1, 78779240), (2, 39389620), (4, 19694810), (5, 15755848), (8, 9847405), (10, 7877924), (20, 3938962), (40, 1969481), (89, 885160), (178, 442580), (356, 221290), (445, 177032), (712, 110645), (890, 88516), (1780, 44258), (3560, 22129)]