21651608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 48172320

約数和(自身を除く): 26520712

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 41, 44, 68, 82, 88, 136, 164, 187, 328, 353, 374, 451, 697, 706, 748, 902, 1394, 1412, 1496, 1804, 2788, 2824, 3608, 3883, 5576, 6001, 7667, 7766, 12002, 14473, 15334, 15532, 24004, 28946, 30668, 31064, 48008, 57892, 61336, 66011, 115784, 132022, 159203, 246041, 264044, 318406, 492082, 528088, 636812, 984164, 1273624, 1968328, 2706451, 5412902, 10825804, 21651608]

約数ペア:

[(1, 21651608), (2, 10825804), (4, 5412902), (8, 2706451), (11, 1968328), (17, 1273624), (22, 984164), (34, 636812), (41, 528088), (44, 492082), (68, 318406), (82, 264044), (88, 246041), (136, 159203), (164, 132022), (187, 115784), (328, 66011), (353, 61336), (374, 57892), (451, 48008), (697, 31064), (706, 30668), (748, 28946), (902, 24004), (1394, 15532), (1412, 15334), (1496, 14473), (1804, 12002), (2788, 7766), (2824, 7667), (3608, 6001), (3883, 5576)]