89915980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:492

約数の個数: 144

約数和(自身を含む): 252806400

約数和(自身を除く): 162890420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 49, 55, 70, 76, 77, 95, 98, 110, 133, 140, 154, 190, 196, 209, 220, 245, 266, 308, 380, 385, 418, 439, 490, 532, 539, 665, 770, 836, 878, 931, 980, 1045, 1078, 1330, 1463, 1540, 1756, 1862, 2090, 2156, 2195, 2660, 2695, 2926, 3073, 3724, 4180, 4390, 4655, 4829, 5390, 5852, 6146, 7315, 8341, 8780, 9310, 9658, 10241, 10780, 12292, 14630, 15365, 16682, 18620, 19316, 20482, 21511, 24145, 29260, 30730, 33364, 33803, 40964, 41705, 43022, 48290, 51205, 58387, 61460, 67606, 83410, 86044, 91751, 96580, 102410, 107555, 116774, 135212, 166820, 169015, 183502, 204820, 215110, 233548, 236621, 291935, 338030, 367004, 408709, 430220, 458755, 473242, 583870, 642257, 676060, 817418, 917510, 946484, 1167740, 1183105, 1284514, 1634836, 1835020, 2043545, 2366210, 2569028, 3211285, 4087090, 4495799, 4732420, 6422570, 8174180, 8991598, 12845140, 17983196, 22478995, 44957990, 89915980]

約数ペア:

[(1, 89915980), (2, 44957990), (4, 22478995), (5, 17983196), (7, 12845140), (10, 8991598), (11, 8174180), (14, 6422570), (19, 4732420), (20, 4495799), (22, 4087090), (28, 3211285), (35, 2569028), (38, 2366210), (44, 2043545), (49, 1835020), (55, 1634836), (70, 1284514), (76, 1183105), (77, 1167740), (95, 946484), (98, 917510), (110, 817418), (133, 676060), (140, 642257), (154, 583870), (190, 473242), (196, 458755), (209, 430220), (220, 408709), (245, 367004), (266, 338030), (308, 291935), (380, 236621), (385, 233548), (418, 215110), (439, 204820), (490, 183502), (532, 169015), (539, 166820), (665, 135212), (770, 116774), (836, 107555), (878, 102410), (931, 96580), (980, 91751), (1045, 86044), (1078, 83410), (1330, 67606), (1463, 61460), (1540, 58387), (1756, 51205), (1862, 48290), (2090, 43022), (2156, 41705), (2195, 40964), (2660, 33803), (2695, 33364), (2926, 30730), (3073, 29260), (3724, 24145), (4180, 21511), (4390, 20482), (4655, 19316), (4829, 18620), (5390, 16682), (5852, 15365), (6146, 14630), (7315, 12292), (8341, 10780), (8780, 10241), (9310, 9658)]