21397656

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1901}}^1$

素因数の和:1984

約数の個数: 64

約数和(自身を含む): 62081280

約数和(自身を除く): 40683624

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 67, 84, 134, 168, 201, 268, 402, 469, 536, 804, 938, 1407, 1608, 1876, 1901, 2814, 3752, 3802, 5628, 5703, 7604, 11256, 11406, 13307, 15208, 22812, 26614, 39921, 45624, 53228, 79842, 106456, 127367, 159684, 254734, 319368, 382101, 509468, 764202, 891569, 1018936, 1528404, 1783138, 2674707, 3056808, 3566276, 5349414, 7132552, 10698828, 21397656]

約数ペア:

[(1, 21397656), (2, 10698828), (3, 7132552), (4, 5349414), (6, 3566276), (7, 3056808), (8, 2674707), (12, 1783138), (14, 1528404), (21, 1018936), (24, 891569), (28, 764202), (42, 509468), (56, 382101), (67, 319368), (84, 254734), (134, 159684), (168, 127367), (201, 106456), (268, 79842), (402, 53228), (469, 45624), (536, 39921), (804, 26614), (938, 22812), (1407, 15208), (1608, 13307), (1876, 11406), (1901, 11256), (2814, 7604), (3752, 5703), (3802, 5628)]