640050

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:283

約数の個数: 48

約数和(自身を含む): 1687392

約数和(自身を除く): 1047342

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 25, 30, 34, 50, 51, 75, 85, 102, 150, 170, 251, 255, 425, 502, 510, 753, 850, 1255, 1275, 1506, 2510, 2550, 3765, 4267, 6275, 7530, 8534, 12550, 12801, 18825, 21335, 25602, 37650, 42670, 64005, 106675, 128010, 213350, 320025, 640050]

約数ペア:

[(1, 640050), (2, 320025), (3, 213350), (5, 128010), (6, 106675), (10, 64005), (15, 42670), (17, 37650), (25, 25602), (30, 21335), (34, 18825), (50, 12801), (51, 12550), (75, 8534), (85, 7530), (102, 6275), (150, 4267), (170, 3765), (251, 2550), (255, 2510), (425, 1506), (502, 1275), (510, 1255), (753, 850)]