28090000

素因数分解:

$2^4\times 5^4\times {\mathrm{53}}^2$

素因数の和:134

約数の個数: 75

約数和(自身を含む): 69316093

約数和(自身を除く): 41226093

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 125, 200, 212, 250, 265, 400, 424, 500, 530, 625, 848, 1000, 1060, 1250, 1325, 2000, 2120, 2500, 2650, 2809, 4240, 5000, 5300, 5618, 6625, 10000, 10600, 11236, 13250, 14045, 21200, 22472, 26500, 28090, 33125, 44944, 53000, 56180, 66250, 70225, 106000, 112360, 132500, 140450, 224720, 265000, 280900, 351125, 530000, 561800, 702250, 1123600, 1404500, 1755625, 2809000, 3511250, 5618000, 7022500, 14045000, 28090000]

約数ペア:

[(1, 28090000), (2, 14045000), (4, 7022500), (5, 5618000), (8, 3511250), (10, 2809000), (16, 1755625), (20, 1404500), (25, 1123600), (40, 702250), (50, 561800), (53, 530000), (80, 351125), (100, 280900), (106, 265000), (125, 224720), (200, 140450), (212, 132500), (250, 112360), (265, 106000), (400, 70225), (424, 66250), (500, 56180), (530, 53000), (625, 44944), (848, 33125), (1000, 28090), (1060, 26500), (1250, 22472), (1325, 21200), (2000, 14045), (2120, 13250), (2500, 11236), (2650, 10600), (2809, 10000), (4240, 6625), (5000, 5618)]