260000

素因数分解:

$2^5\times 5^4\times {\mathrm{13}}^1$

素因数の和:43

約数の個数: 60

約数和(自身を含む): 688842

約数和(自身を除く): 428842

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 125, 130, 160, 200, 208, 250, 260, 325, 400, 416, 500, 520, 625, 650, 800, 1000, 1040, 1250, 1300, 1625, 2000, 2080, 2500, 2600, 3250, 4000, 5000, 5200, 6500, 8125, 10000, 10400, 13000, 16250, 20000, 26000, 32500, 52000, 65000, 130000, 260000]

約数ペア:

[(1, 260000), (2, 130000), (4, 65000), (5, 52000), (8, 32500), (10, 26000), (13, 20000), (16, 16250), (20, 13000), (25, 10400), (26, 10000), (32, 8125), (40, 6500), (50, 5200), (52, 5000), (65, 4000), (80, 3250), (100, 2600), (104, 2500), (125, 2080), (130, 2000), (160, 1625), (200, 1300), (208, 1250), (250, 1040), (260, 1000), (325, 800), (400, 650), (416, 625), (500, 520)]