638568

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{181}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 2022930

約数和(自身を除く): 1384362

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 49, 56, 63, 72, 84, 98, 126, 147, 168, 181, 196, 252, 294, 362, 392, 441, 504, 543, 588, 724, 882, 1086, 1176, 1267, 1448, 1629, 1764, 2172, 2534, 3258, 3528, 3801, 4344, 5068, 6516, 7602, 8869, 10136, 11403, 13032, 15204, 17738, 22806, 26607, 30408, 35476, 45612, 53214, 70952, 79821, 91224, 106428, 159642, 212856, 319284, 638568]

約数ペア:

[(1, 638568), (2, 319284), (3, 212856), (4, 159642), (6, 106428), (7, 91224), (8, 79821), (9, 70952), (12, 53214), (14, 45612), (18, 35476), (21, 30408), (24, 26607), (28, 22806), (36, 17738), (42, 15204), (49, 13032), (56, 11403), (63, 10136), (72, 8869), (84, 7602), (98, 6516), (126, 5068), (147, 4344), (168, 3801), (181, 3528), (196, 3258), (252, 2534), (294, 2172), (362, 1764), (392, 1629), (441, 1448), (504, 1267), (543, 1176), (588, 1086), (724, 882)]