21751856

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:262

約数の個数: 80

約数和(自身を含む): 51455040

約数和(自身を除く): 29703184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 37, 56, 58, 74, 112, 116, 148, 181, 203, 232, 259, 296, 362, 406, 464, 518, 592, 724, 812, 1036, 1073, 1267, 1448, 1624, 2072, 2146, 2534, 2896, 3248, 4144, 4292, 5068, 5249, 6697, 7511, 8584, 10136, 10498, 13394, 15022, 17168, 20272, 20996, 26788, 30044, 36743, 41992, 46879, 53576, 60088, 73486, 83984, 93758, 107152, 120176, 146972, 187516, 194213, 293944, 375032, 388426, 587888, 750064, 776852, 1359491, 1553704, 2718982, 3107408, 5437964, 10875928, 21751856]

約数ペア:

[(1, 21751856), (2, 10875928), (4, 5437964), (7, 3107408), (8, 2718982), (14, 1553704), (16, 1359491), (28, 776852), (29, 750064), (37, 587888), (56, 388426), (58, 375032), (74, 293944), (112, 194213), (116, 187516), (148, 146972), (181, 120176), (203, 107152), (232, 93758), (259, 83984), (296, 73486), (362, 60088), (406, 53576), (464, 46879), (518, 41992), (592, 36743), (724, 30044), (812, 26788), (1036, 20996), (1073, 20272), (1267, 17168), (1448, 15022), (1624, 13394), (2072, 10498), (2146, 10136), (2534, 8584), (2896, 7511), (3248, 6697), (4144, 5249), (4292, 5068)]