19640500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3571}}^1$

素因数の和:3601

約数の個数: 48

約数和(自身を含む): 46807488

約数和(自身を除く): 27166988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3571, 5500, 7142, 14284, 17855, 35710, 39281, 71420, 78562, 89275, 157124, 178550, 196405, 357100, 392810, 446375, 785620, 892750, 982025, 1785500, 1964050, 3928100, 4910125, 9820250, 19640500]

約数ペア:

[(1, 19640500), (2, 9820250), (4, 4910125), (5, 3928100), (10, 1964050), (11, 1785500), (20, 982025), (22, 892750), (25, 785620), (44, 446375), (50, 392810), (55, 357100), (100, 196405), (110, 178550), (125, 157124), (220, 89275), (250, 78562), (275, 71420), (500, 39281), (550, 35710), (1100, 17855), (1375, 14284), (2750, 7142), (3571, 5500)]