77899640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21401}}^1$

素因数の和:21432

約数の個数: 64

約数和(自身を含む): 215732160

約数和(自身を除く): 137832520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21401, 42802, 85604, 107005, 149807, 171208, 214010, 278213, 299614, 428020, 556426, 599228, 749035, 856040, 1112852, 1198456, 1391065, 1498070, 1947491, 2225704, 2782130, 2996140, 3894982, 5564260, 5992280, 7789964, 9737455, 11128520, 15579928, 19474910, 38949820, 77899640]

約数ペア:

[(1, 77899640), (2, 38949820), (4, 19474910), (5, 15579928), (7, 11128520), (8, 9737455), (10, 7789964), (13, 5992280), (14, 5564260), (20, 3894982), (26, 2996140), (28, 2782130), (35, 2225704), (40, 1947491), (52, 1498070), (56, 1391065), (65, 1198456), (70, 1112852), (91, 856040), (104, 749035), (130, 599228), (140, 556426), (182, 428020), (260, 299614), (280, 278213), (364, 214010), (455, 171208), (520, 149807), (728, 107005), (910, 85604), (1820, 42802), (3640, 21401)]