21287604

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 59270400

約数和(自身を除く): 37982796

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 23, 26, 34, 39, 46, 51, 52, 68, 69, 78, 92, 102, 138, 156, 204, 221, 276, 299, 349, 391, 442, 598, 663, 698, 782, 884, 897, 1047, 1173, 1196, 1326, 1396, 1564, 1794, 2094, 2346, 2652, 3588, 4188, 4537, 4692, 5083, 5933, 8027, 9074, 10166, 11866, 13611, 15249, 16054, 17799, 18148, 20332, 23732, 24081, 27222, 30498, 32108, 35598, 48162, 54444, 60996, 71196, 77129, 96324, 104351, 136459, 154258, 208702, 231387, 272918, 308516, 313053, 409377, 417404, 462774, 545836, 626106, 818754, 925548, 1252212, 1637508, 1773967, 3547934, 5321901, 7095868, 10643802, 21287604]

約数ペア:

[(1, 21287604), (2, 10643802), (3, 7095868), (4, 5321901), (6, 3547934), (12, 1773967), (13, 1637508), (17, 1252212), (23, 925548), (26, 818754), (34, 626106), (39, 545836), (46, 462774), (51, 417404), (52, 409377), (68, 313053), (69, 308516), (78, 272918), (92, 231387), (102, 208702), (138, 154258), (156, 136459), (204, 104351), (221, 96324), (276, 77129), (299, 71196), (349, 60996), (391, 54444), (442, 48162), (598, 35598), (663, 32108), (698, 30498), (782, 27222), (884, 24081), (897, 23732), (1047, 20332), (1173, 18148), (1196, 17799), (1326, 16054), (1396, 15249), (1564, 13611), (1794, 11866), (2094, 10166), (2346, 9074), (2652, 8027), (3588, 5933), (4188, 5083), (4537, 4692)]