19168640

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:571

約数の個数: 64

約数和(自身を含む): 46671120

約数和(自身を除く): 27502480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 491, 610, 640, 976, 982, 1220, 1952, 1964, 2440, 2455, 3904, 3928, 4880, 4910, 7808, 7856, 9760, 9820, 15712, 19520, 19640, 29951, 31424, 39040, 39280, 59902, 62848, 78560, 119804, 149755, 157120, 239608, 299510, 314240, 479216, 599020, 958432, 1198040, 1916864, 2396080, 3833728, 4792160, 9584320, 19168640]

約数ペア:

[(1, 19168640), (2, 9584320), (4, 4792160), (5, 3833728), (8, 2396080), (10, 1916864), (16, 1198040), (20, 958432), (32, 599020), (40, 479216), (61, 314240), (64, 299510), (80, 239608), (122, 157120), (128, 149755), (160, 119804), (244, 78560), (305, 62848), (320, 59902), (488, 39280), (491, 39040), (610, 31424), (640, 29951), (976, 19640), (982, 19520), (1220, 15712), (1952, 9820), (1964, 9760), (2440, 7856), (2455, 7808), (3904, 4910), (3928, 4880)]