28628820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:806

約数の個数: 144

約数和(自身を含む): 99852480

約数和(自身を除く): 71223660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 495, 570, 627, 660, 684, 761, 836, 855, 990, 1045, 1140, 1254, 1522, 1710, 1881, 1980, 2090, 2283, 2508, 3044, 3135, 3420, 3762, 3805, 4180, 4566, 6270, 6849, 7524, 7610, 8371, 9132, 9405, 11415, 12540, 13698, 14459, 15220, 16742, 18810, 22830, 25113, 27396, 28918, 33484, 34245, 37620, 41855, 43377, 45660, 50226, 57836, 68490, 72295, 75339, 83710, 86754, 100452, 125565, 130131, 136980, 144590, 150678, 159049, 167420, 173508, 216885, 251130, 260262, 289180, 301356, 318098, 376695, 433770, 477147, 502260, 520524, 636196, 650655, 753390, 795245, 867540, 954294, 1301310, 1431441, 1506780, 1590490, 1908588, 2385735, 2602620, 2862882, 3180980, 4771470, 5725764, 7157205, 9542940, 14314410, 28628820]

約数ペア:

[(1, 28628820), (2, 14314410), (3, 9542940), (4, 7157205), (5, 5725764), (6, 4771470), (9, 3180980), (10, 2862882), (11, 2602620), (12, 2385735), (15, 1908588), (18, 1590490), (19, 1506780), (20, 1431441), (22, 1301310), (30, 954294), (33, 867540), (36, 795245), (38, 753390), (44, 650655), (45, 636196), (55, 520524), (57, 502260), (60, 477147), (66, 433770), (76, 376695), (90, 318098), (95, 301356), (99, 289180), (110, 260262), (114, 251130), (132, 216885), (165, 173508), (171, 167420), (180, 159049), (190, 150678), (198, 144590), (209, 136980), (220, 130131), (228, 125565), (285, 100452), (330, 86754), (342, 83710), (380, 75339), (396, 72295), (418, 68490), (495, 57836), (570, 50226), (627, 45660), (660, 43377), (684, 41855), (761, 37620), (836, 34245), (855, 33484), (990, 28918), (1045, 27396), (1140, 25113), (1254, 22830), (1522, 18810), (1710, 16742), (1881, 15220), (1980, 14459), (2090, 13698), (2283, 12540), (2508, 11415), (3044, 9405), (3135, 9132), (3420, 8371), (3762, 7610), (3805, 7524), (4180, 6849), (4566, 6270)]