290000

素因数分解:

$2^4\times 5^4\times {\mathrm{29}}^1$

素因数の和:57

約数の個数: 50

約数和(自身を含む): 726330

約数和(自身を除く): 436330

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 125, 145, 200, 232, 250, 290, 400, 464, 500, 580, 625, 725, 1000, 1160, 1250, 1450, 2000, 2320, 2500, 2900, 3625, 5000, 5800, 7250, 10000, 11600, 14500, 18125, 29000, 36250, 58000, 72500, 145000, 290000]

約数ペア:

[(1, 290000), (2, 145000), (4, 72500), (5, 58000), (8, 36250), (10, 29000), (16, 18125), (20, 14500), (25, 11600), (29, 10000), (40, 7250), (50, 5800), (58, 5000), (80, 3625), (100, 2900), (116, 2500), (125, 2320), (145, 2000), (200, 1450), (232, 1250), (250, 1160), (290, 1000), (400, 725), (464, 625), (500, 580)]