9902440

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{881}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 22385160

約数和(自身を除く): 12482720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 881, 1124, 1405, 1762, 2248, 2810, 3524, 4405, 5620, 7048, 8810, 11240, 17620, 35240, 247561, 495122, 990244, 1237805, 1980488, 2475610, 4951220, 9902440]

約数ペア:

[(1, 9902440), (2, 4951220), (4, 2475610), (5, 1980488), (8, 1237805), (10, 990244), (20, 495122), (40, 247561), (281, 35240), (562, 17620), (881, 11240), (1124, 8810), (1405, 7048), (1762, 5620), (2248, 4405), (2810, 3524)]