164493640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5279}}^1$

素因数の和:5350

約数の個数: 64

約数和(自身を含む): 399168000

約数和(自身を除く): 234674360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 1558, 1640, 3116, 3895, 5279, 6232, 7790, 10558, 15580, 21116, 26395, 31160, 42232, 52790, 100301, 105580, 200602, 211160, 216439, 401204, 432878, 501505, 802408, 865756, 1003010, 1082195, 1731512, 2006020, 2164390, 4012040, 4112341, 4328780, 8224682, 8657560, 16449364, 20561705, 32898728, 41123410, 82246820, 164493640]

約数ペア:

[(1, 164493640), (2, 82246820), (4, 41123410), (5, 32898728), (8, 20561705), (10, 16449364), (19, 8657560), (20, 8224682), (38, 4328780), (40, 4112341), (41, 4012040), (76, 2164390), (82, 2006020), (95, 1731512), (152, 1082195), (164, 1003010), (190, 865756), (205, 802408), (328, 501505), (380, 432878), (410, 401204), (760, 216439), (779, 211160), (820, 200602), (1558, 105580), (1640, 100301), (3116, 52790), (3895, 42232), (5279, 31160), (6232, 26395), (7790, 21116), (10558, 15580)]