660440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 1728000

約数和(自身を除く): 1067560

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 79, 88, 95, 110, 152, 158, 190, 209, 220, 316, 380, 395, 418, 440, 632, 760, 790, 836, 869, 1045, 1501, 1580, 1672, 1738, 2090, 3002, 3160, 3476, 4180, 4345, 6004, 6952, 7505, 8360, 8690, 12008, 15010, 16511, 17380, 30020, 33022, 34760, 60040, 66044, 82555, 132088, 165110, 330220, 660440]

約数ペア:

[(1, 660440), (2, 330220), (4, 165110), (5, 132088), (8, 82555), (10, 66044), (11, 60040), (19, 34760), (20, 33022), (22, 30020), (38, 17380), (40, 16511), (44, 15010), (55, 12008), (76, 8690), (79, 8360), (88, 7505), (95, 6952), (110, 6004), (152, 4345), (158, 4180), (190, 3476), (209, 3160), (220, 3002), (316, 2090), (380, 1738), (395, 1672), (418, 1580), (440, 1501), (632, 1045), (760, 869), (790, 836)]