21365872

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:266

約数の個数: 80

約数和(自身を含む): 49362912

約数和(自身を除く): 27997040

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 37, 44, 68, 74, 88, 136, 148, 176, 187, 193, 272, 296, 374, 386, 407, 592, 629, 748, 772, 814, 1258, 1496, 1544, 1628, 2123, 2516, 2992, 3088, 3256, 3281, 4246, 5032, 6512, 6562, 6919, 7141, 8492, 10064, 13124, 13838, 14282, 16984, 26248, 27676, 28564, 33968, 36091, 52496, 55352, 57128, 72182, 78551, 110704, 114256, 121397, 144364, 157102, 242794, 288728, 314204, 485588, 577456, 628408, 971176, 1256816, 1335367, 1942352, 2670734, 5341468, 10682936, 21365872]

約数ペア:

[(1, 21365872), (2, 10682936), (4, 5341468), (8, 2670734), (11, 1942352), (16, 1335367), (17, 1256816), (22, 971176), (34, 628408), (37, 577456), (44, 485588), (68, 314204), (74, 288728), (88, 242794), (136, 157102), (148, 144364), (176, 121397), (187, 114256), (193, 110704), (272, 78551), (296, 72182), (374, 57128), (386, 55352), (407, 52496), (592, 36091), (629, 33968), (748, 28564), (772, 27676), (814, 26248), (1258, 16984), (1496, 14282), (1544, 13838), (1628, 13124), (2123, 10064), (2516, 8492), (2992, 7141), (3088, 6919), (3256, 6562), (3281, 6512), (4246, 5032)]