21238704

素因数分解:

$2^4\times 3^2\times {\mathrm{83}}^1\times {\mathrm{1777}}^1$

素因数の和:1874

約数の個数: 60

約数和(自身を含む): 60188856

約数和(自身を除く): 38950152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 83, 144, 166, 249, 332, 498, 664, 747, 996, 1328, 1494, 1777, 1992, 2988, 3554, 3984, 5331, 5976, 7108, 10662, 11952, 14216, 15993, 21324, 28432, 31986, 42648, 63972, 85296, 127944, 147491, 255888, 294982, 442473, 589964, 884946, 1179928, 1327419, 1769892, 2359856, 2654838, 3539784, 5309676, 7079568, 10619352, 21238704]

約数ペア:

[(1, 21238704), (2, 10619352), (3, 7079568), (4, 5309676), (6, 3539784), (8, 2654838), (9, 2359856), (12, 1769892), (16, 1327419), (18, 1179928), (24, 884946), (36, 589964), (48, 442473), (72, 294982), (83, 255888), (144, 147491), (166, 127944), (249, 85296), (332, 63972), (498, 42648), (664, 31986), (747, 28432), (996, 21324), (1328, 15993), (1494, 14216), (1777, 11952), (1992, 10662), (2988, 7108), (3554, 5976), (3984, 5331)]