21215936

素因数分解:

$2^6\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 112

約数和(自身を含む): 52669440

約数和(自身を除く): 31453504

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 29, 32, 46, 56, 58, 64, 71, 92, 112, 116, 142, 161, 184, 203, 224, 232, 284, 322, 368, 406, 448, 464, 497, 568, 644, 667, 736, 812, 928, 994, 1136, 1288, 1334, 1472, 1624, 1633, 1856, 1988, 2059, 2272, 2576, 2668, 3248, 3266, 3976, 4118, 4544, 4669, 5152, 5336, 6496, 6532, 7952, 8236, 9338, 10304, 10672, 11431, 12992, 13064, 14413, 15904, 16472, 18676, 21344, 22862, 26128, 28826, 31808, 32944, 37352, 42688, 45724, 47357, 52256, 57652, 65888, 74704, 91448, 94714, 104512, 115304, 131776, 149408, 182896, 189428, 230608, 298816, 331499, 365792, 378856, 461216, 662998, 731584, 757712, 922432, 1325996, 1515424, 2651992, 3030848, 5303984, 10607968, 21215936]

約数ペア:

[(1, 21215936), (2, 10607968), (4, 5303984), (7, 3030848), (8, 2651992), (14, 1515424), (16, 1325996), (23, 922432), (28, 757712), (29, 731584), (32, 662998), (46, 461216), (56, 378856), (58, 365792), (64, 331499), (71, 298816), (92, 230608), (112, 189428), (116, 182896), (142, 149408), (161, 131776), (184, 115304), (203, 104512), (224, 94714), (232, 91448), (284, 74704), (322, 65888), (368, 57652), (406, 52256), (448, 47357), (464, 45724), (497, 42688), (568, 37352), (644, 32944), (667, 31808), (736, 28826), (812, 26128), (928, 22862), (994, 21344), (1136, 18676), (1288, 16472), (1334, 15904), (1472, 14413), (1624, 13064), (1633, 12992), (1856, 11431), (1988, 10672), (2059, 10304), (2272, 9338), (2576, 8236), (2668, 7952), (3248, 6532), (3266, 6496), (3976, 5336), (4118, 5152), (4544, 4669)]