20128103420

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{919}}^1\times {\mathrm{1321}}^1$

素因数の和:3078

約数の個数: 48

約数和(自身を含む): 42398126400

約数和(自身を除く): 22270022980

約数列:

[1, 2, 4, 5, 10, 20, 829, 919, 1321, 1658, 1838, 2642, 3316, 3676, 4145, 4595, 5284, 6605, 8290, 9190, 13210, 16580, 18380, 26420, 761851, 1095109, 1213999, 1523702, 2190218, 2427998, 3047404, 3809255, 4380436, 4855996, 5475545, 6069995, 7618510, 10951090, 12139990, 15237020, 21902180, 24279980, 1006405171, 2012810342, 4025620684, 5032025855, 10064051710, 20128103420]

約数ペア:

[(1, 20128103420), (2, 10064051710), (4, 5032025855), (5, 4025620684), (10, 2012810342), (20, 1006405171), (829, 24279980), (919, 21902180), (1321, 15237020), (1658, 12139990), (1838, 10951090), (2642, 7618510), (3316, 6069995), (3676, 5475545), (4145, 4855996), (4595, 4380436), (5284, 3809255), (6605, 3047404), (8290, 2427998), (9190, 2190218), (13210, 1523702), (16580, 1213999), (18380, 1095109), (26420, 761851)]