21958160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{347}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 59031936

約数和(自身を除く): 37073776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 347, 452, 560, 565, 694, 791, 904, 1130, 1388, 1582, 1735, 1808, 2260, 2429, 2776, 3164, 3470, 3955, 4520, 4858, 5552, 6328, 6940, 7910, 9040, 9716, 12145, 12656, 13880, 15820, 19432, 24290, 27760, 31640, 38864, 39211, 48580, 63280, 78422, 97160, 156844, 194320, 196055, 274477, 313688, 392110, 548954, 627376, 784220, 1097908, 1372385, 1568440, 2195816, 2744770, 3136880, 4391632, 5489540, 10979080, 21958160]

約数ペア:

[(1, 21958160), (2, 10979080), (4, 5489540), (5, 4391632), (7, 3136880), (8, 2744770), (10, 2195816), (14, 1568440), (16, 1372385), (20, 1097908), (28, 784220), (35, 627376), (40, 548954), (56, 392110), (70, 313688), (80, 274477), (112, 196055), (113, 194320), (140, 156844), (226, 97160), (280, 78422), (347, 63280), (452, 48580), (560, 39211), (565, 38864), (694, 31640), (791, 27760), (904, 24290), (1130, 19432), (1388, 15820), (1582, 13880), (1735, 12656), (1808, 12145), (2260, 9716), (2429, 9040), (2776, 7910), (3164, 6940), (3470, 6328), (3955, 5552), (4520, 4858)]