21948040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28879}}^1$

素因数の和:28909

約数の個数: 32

約数和(自身を含む): 51984000

約数和(自身を除く): 30035960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28879, 57758, 115516, 144395, 231032, 288790, 548701, 577580, 1097402, 1155160, 2194804, 2743505, 4389608, 5487010, 10974020, 21948040]

約数ペア:

[(1, 21948040), (2, 10974020), (4, 5487010), (5, 4389608), (8, 2743505), (10, 2194804), (19, 1155160), (20, 1097402), (38, 577580), (40, 548701), (76, 288790), (95, 231032), (152, 144395), (190, 115516), (380, 57758), (760, 28879)]