21438768

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 160

約数和(自身を含む): 65995776

約数和(自身を除く): 44557008

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 17, 24, 26, 34, 39, 43, 47, 48, 51, 52, 68, 78, 86, 94, 102, 104, 129, 136, 141, 156, 172, 188, 204, 208, 221, 258, 272, 282, 312, 344, 376, 408, 442, 516, 559, 564, 611, 624, 663, 688, 731, 752, 799, 816, 884, 1032, 1118, 1128, 1222, 1326, 1462, 1598, 1677, 1768, 1833, 2021, 2064, 2193, 2236, 2256, 2397, 2444, 2652, 2924, 3196, 3354, 3536, 3666, 4042, 4386, 4472, 4794, 4888, 5304, 5848, 6063, 6392, 6708, 7332, 8084, 8772, 8944, 9503, 9588, 9776, 10387, 10608, 11696, 12126, 12784, 13416, 14664, 16168, 17544, 19006, 19176, 20774, 24252, 26273, 26832, 28509, 29328, 31161, 32336, 34357, 35088, 38012, 38352, 41548, 48504, 52546, 57018, 62322, 68714, 76024, 78819, 83096, 97008, 103071, 105092, 114036, 124644, 137428, 152048, 157638, 166192, 206142, 210184, 228072, 249288, 274856, 315276, 412284, 420368, 446641, 456144, 498576, 549712, 630552, 824568, 893282, 1261104, 1339923, 1649136, 1786564, 2679846, 3573128, 5359692, 7146256, 10719384, 21438768]

約数ペア:

[(1, 21438768), (2, 10719384), (3, 7146256), (4, 5359692), (6, 3573128), (8, 2679846), (12, 1786564), (13, 1649136), (16, 1339923), (17, 1261104), (24, 893282), (26, 824568), (34, 630552), (39, 549712), (43, 498576), (47, 456144), (48, 446641), (51, 420368), (52, 412284), (68, 315276), (78, 274856), (86, 249288), (94, 228072), (102, 210184), (104, 206142), (129, 166192), (136, 157638), (141, 152048), (156, 137428), (172, 124644), (188, 114036), (204, 105092), (208, 103071), (221, 97008), (258, 83096), (272, 78819), (282, 76024), (312, 68714), (344, 62322), (376, 57018), (408, 52546), (442, 48504), (516, 41548), (559, 38352), (564, 38012), (611, 35088), (624, 34357), (663, 32336), (688, 31161), (731, 29328), (752, 28509), (799, 26832), (816, 26273), (884, 24252), (1032, 20774), (1118, 19176), (1128, 19006), (1222, 17544), (1326, 16168), (1462, 14664), (1598, 13416), (1677, 12784), (1768, 12126), (1833, 11696), (2021, 10608), (2064, 10387), (2193, 9776), (2236, 9588), (2256, 9503), (2397, 8944), (2444, 8772), (2652, 8084), (2924, 7332), (3196, 6708), (3354, 6392), (3536, 6063), (3666, 5848), (4042, 5304), (4386, 4888), (4472, 4794)]