21375864

素因数分解:

$2^3\times 3^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 61127040

約数和(自身を除く): 39751176

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 31, 36, 61, 62, 72, 93, 122, 124, 157, 183, 186, 244, 248, 279, 314, 366, 372, 471, 488, 549, 558, 628, 732, 744, 942, 1098, 1116, 1256, 1413, 1464, 1884, 1891, 2196, 2232, 2826, 3768, 3782, 4392, 4867, 5652, 5673, 7564, 9577, 9734, 11304, 11346, 14601, 15128, 17019, 19154, 19468, 22692, 28731, 29202, 34038, 38308, 38936, 43803, 45384, 57462, 58404, 68076, 76616, 86193, 87606, 114924, 116808, 136152, 172386, 175212, 229848, 296887, 344772, 350424, 593774, 689544, 890661, 1187548, 1781322, 2375096, 2671983, 3562644, 5343966, 7125288, 10687932, 21375864]

約数ペア:

[(1, 21375864), (2, 10687932), (3, 7125288), (4, 5343966), (6, 3562644), (8, 2671983), (9, 2375096), (12, 1781322), (18, 1187548), (24, 890661), (31, 689544), (36, 593774), (61, 350424), (62, 344772), (72, 296887), (93, 229848), (122, 175212), (124, 172386), (157, 136152), (183, 116808), (186, 114924), (244, 87606), (248, 86193), (279, 76616), (314, 68076), (366, 58404), (372, 57462), (471, 45384), (488, 43803), (549, 38936), (558, 38308), (628, 34038), (732, 29202), (744, 28731), (942, 22692), (1098, 19468), (1116, 19154), (1256, 17019), (1413, 15128), (1464, 14601), (1884, 11346), (1891, 11304), (2196, 9734), (2232, 9577), (2826, 7564), (3768, 5673), (3782, 5652), (4392, 4867)]