81826480

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5651}}^1$

素因数の和:5845

約数の個数: 40

約数和(自身を含む): 191331504

約数和(自身を除く): 109505024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 5651, 7240, 11302, 14480, 22604, 28255, 45208, 56510, 90416, 113020, 226040, 452080, 1022831, 2045662, 4091324, 5114155, 8182648, 10228310, 16365296, 20456620, 40913240, 81826480]

約数ペア:

[(1, 81826480), (2, 40913240), (4, 20456620), (5, 16365296), (8, 10228310), (10, 8182648), (16, 5114155), (20, 4091324), (40, 2045662), (80, 1022831), (181, 452080), (362, 226040), (724, 113020), (905, 90416), (1448, 56510), (1810, 45208), (2896, 28255), (3620, 22604), (5651, 14480), (7240, 11302)]