21181048

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1171}}^1$

素因数の和:1220

約数の個数: 64

約数和(自身を含む): 50630400

約数和(自身を除く): 29449352

約数列:

[1, 2, 4, 7, 8, 14, 17, 19, 28, 34, 38, 56, 68, 76, 119, 133, 136, 152, 238, 266, 323, 476, 532, 646, 952, 1064, 1171, 1292, 2261, 2342, 2584, 4522, 4684, 8197, 9044, 9368, 16394, 18088, 19907, 22249, 32788, 39814, 44498, 65576, 79628, 88996, 139349, 155743, 159256, 177992, 278698, 311486, 378233, 557396, 622972, 756466, 1114792, 1245944, 1512932, 2647631, 3025864, 5295262, 10590524, 21181048]

約数ペア:

[(1, 21181048), (2, 10590524), (4, 5295262), (7, 3025864), (8, 2647631), (14, 1512932), (17, 1245944), (19, 1114792), (28, 756466), (34, 622972), (38, 557396), (56, 378233), (68, 311486), (76, 278698), (119, 177992), (133, 159256), (136, 155743), (152, 139349), (238, 88996), (266, 79628), (323, 65576), (476, 44498), (532, 39814), (646, 32788), (952, 22249), (1064, 19907), (1171, 18088), (1292, 16394), (2261, 9368), (2342, 9044), (2584, 8197), (4522, 4684)]