1300000

素因数分解:

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

素因数の和:48

約数の個数: 72

約数和(自身を含む): 3445092

約数和(自身を除く): 2145092

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, 3125, 3250, 4000, 5000, 5200, 6250, 6500, 8125, 10000, 10400, 12500, 13000, 16250, 20000, 25000, 26000, 32500, 40625, 50000, 52000, 65000, 81250, 100000, 130000, 162500, 260000, 325000, 650000, 1300000]

約数ペア:

[(1, 1300000), (2, 650000), (4, 325000), (5, 260000), (8, 162500), (10, 130000), (13, 100000), (16, 81250), (20, 65000), (25, 52000), (26, 50000), (32, 40625), (40, 32500), (50, 26000), (52, 25000), (65, 20000), (80, 16250), (100, 13000), (104, 12500), (125, 10400), (130, 10000), (160, 8125), (200, 6500), (208, 6250), (250, 5200), (260, 5000), (325, 4000), (400, 3250), (416, 3125), (500, 2600), (520, 2500), (625, 2080), (650, 2000), (800, 1625), (1000, 1300), (1040, 1250)]