21126496

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 21995744

約数列:

[1, 2, 4, 8, 16, 32, 61, 79, 122, 137, 158, 244, 274, 316, 488, 548, 632, 976, 1096, 1264, 1952, 2192, 2528, 4384, 4819, 8357, 9638, 10823, 16714, 19276, 21646, 33428, 38552, 43292, 66856, 77104, 86584, 133712, 154208, 173168, 267424, 346336, 660203, 1320406, 2640812, 5281624, 10563248, 21126496]

約数ペア:

[(1, 21126496), (2, 10563248), (4, 5281624), (8, 2640812), (16, 1320406), (32, 660203), (61, 346336), (79, 267424), (122, 173168), (137, 154208), (158, 133712), (244, 86584), (274, 77104), (316, 66856), (488, 43292), (548, 38552), (632, 33428), (976, 21646), (1096, 19276), (1264, 16714), (1952, 10823), (2192, 9638), (2528, 8357), (4384, 4819)]