20440900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2879}}^1$

素因数の和:2964

約数の個数: 36

約数和(自身を含む): 44997120

約数和(自身を除く): 24556220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 2879, 3550, 5758, 7100, 11516, 14395, 28790, 57580, 71975, 143950, 204409, 287900, 408818, 817636, 1022045, 2044090, 4088180, 5110225, 10220450, 20440900]

約数ペア:

[(1, 20440900), (2, 10220450), (4, 5110225), (5, 4088180), (10, 2044090), (20, 1022045), (25, 817636), (50, 408818), (71, 287900), (100, 204409), (142, 143950), (284, 71975), (355, 57580), (710, 28790), (1420, 14395), (1775, 11516), (2879, 7100), (3550, 5758)]