990230.0000000

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1$

素因数の和:485

約数の個数: 64

約数和(自身を含む): 12393000

約数和(自身を除く): 7507880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 449, 544, 640, 680, 898, 1088, 1360, 1796, 2176, 2245, 2720, 3592, 4490, 5440, 7184, 7633, 8980, 10880, 14368, 15266, 17960, 28736, 30532, 35920, 38165, 57472, 61064, 71840, 76330, 122128, 143680, 152660, 244256, 287360, 305320, 488512, 610640, 977024, 1221280, 2442560, 4885120]

約数ペア:

[(1, 4885120), (2, 2442560), (4, 1221280), (5, 977024), (8, 610640), (10, 488512), (16, 305320), (17, 287360), (20, 244256), (32, 152660), (34, 143680), (40, 122128), (64, 76330), (68, 71840), (80, 61064), (85, 57472), (128, 38165), (136, 35920), (160, 30532), (170, 28736), (272, 17960), (320, 15266), (340, 14368), (449, 10880), (544, 8980), (640, 7633), (680, 7184), (898, 5440), (1088, 4490), (1360, 3592), (1796, 2720), (2176, 2245)]