21243824

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 50592000

約数和(自身を除く): 29348176

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 67, 76, 112, 133, 134, 149, 152, 266, 268, 298, 304, 469, 532, 536, 596, 938, 1043, 1064, 1072, 1192, 1273, 1876, 2086, 2128, 2384, 2546, 2831, 3752, 4172, 5092, 5662, 7504, 8344, 8911, 9983, 10184, 11324, 16688, 17822, 19817, 19966, 20368, 22648, 35644, 39634, 39932, 45296, 69881, 71288, 79268, 79864, 139762, 142576, 158536, 159728, 189677, 279524, 317072, 379354, 559048, 758708, 1118096, 1327739, 1517416, 2655478, 3034832, 5310956, 10621912, 21243824]

約数ペア:

[(1, 21243824), (2, 10621912), (4, 5310956), (7, 3034832), (8, 2655478), (14, 1517416), (16, 1327739), (19, 1118096), (28, 758708), (38, 559048), (56, 379354), (67, 317072), (76, 279524), (112, 189677), (133, 159728), (134, 158536), (149, 142576), (152, 139762), (266, 79864), (268, 79268), (298, 71288), (304, 69881), (469, 45296), (532, 39932), (536, 39634), (596, 35644), (938, 22648), (1043, 20368), (1064, 19966), (1072, 19817), (1192, 17822), (1273, 16688), (1876, 11324), (2086, 10184), (2128, 9983), (2384, 8911), (2546, 8344), (2831, 7504), (3752, 5662), (4172, 5092)]