21435568

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 52568064

約数和(自身を除く): 31132496

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 127, 137, 154, 176, 254, 274, 308, 508, 548, 616, 889, 959, 1016, 1096, 1232, 1397, 1507, 1778, 1918, 2032, 2192, 2794, 3014, 3556, 3836, 5588, 6028, 7112, 7672, 9779, 10549, 11176, 12056, 14224, 15344, 17399, 19558, 21098, 22352, 24112, 34798, 39116, 42196, 69596, 78232, 84392, 121793, 139192, 156464, 168784, 191389, 243586, 278384, 382778, 487172, 765556, 974344, 1339723, 1531112, 1948688, 2679446, 3062224, 5358892, 10717784, 21435568]

約数ペア:

[(1, 21435568), (2, 10717784), (4, 5358892), (7, 3062224), (8, 2679446), (11, 1948688), (14, 1531112), (16, 1339723), (22, 974344), (28, 765556), (44, 487172), (56, 382778), (77, 278384), (88, 243586), (112, 191389), (127, 168784), (137, 156464), (154, 139192), (176, 121793), (254, 84392), (274, 78232), (308, 69596), (508, 42196), (548, 39116), (616, 34798), (889, 24112), (959, 22352), (1016, 21098), (1096, 19558), (1232, 17399), (1397, 15344), (1507, 14224), (1778, 12056), (1918, 11176), (2032, 10549), (2192, 9779), (2794, 7672), (3014, 7112), (3556, 6028), (3836, 5588)]