38688640

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1071

約数の個数: 64

約数和(自身を含む): 94101120

約数和(自身を除く): 55412480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 991, 1220, 1952, 1982, 2440, 3904, 3964, 4880, 4955, 7808, 7928, 9760, 9910, 15856, 19520, 19820, 31712, 39040, 39640, 60451, 63424, 79280, 120902, 126848, 158560, 241804, 302255, 317120, 483608, 604510, 634240, 967216, 1209020, 1934432, 2418040, 3868864, 4836080, 7737728, 9672160, 19344320, 38688640]

約数ペア:

[(1, 38688640), (2, 19344320), (4, 9672160), (5, 7737728), (8, 4836080), (10, 3868864), (16, 2418040), (20, 1934432), (32, 1209020), (40, 967216), (61, 634240), (64, 604510), (80, 483608), (122, 317120), (128, 302255), (160, 241804), (244, 158560), (305, 126848), (320, 120902), (488, 79280), (610, 63424), (640, 60451), (976, 39640), (991, 39040), (1220, 31712), (1952, 19820), (1982, 19520), (2440, 15856), (3904, 9910), (3964, 9760), (4880, 7928), (4955, 7808)]