21871773

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{853}}^1$

素因数の和:914

約数の個数: 48

約数和(自身を含む): 40500096

約数和(自身を除く): 18628323

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 853, 1221, 2331, 2559, 2849, 3663, 5971, 7677, 8547, 9383, 17913, 25641, 28149, 31561, 53739, 65681, 84447, 94683, 197043, 220927, 284049, 347171, 591129, 662781, 1041513, 1988343, 2430197, 3124539, 7290591, 21871773]

約数ペア:

[(1, 21871773), (3, 7290591), (7, 3124539), (9, 2430197), (11, 1988343), (21, 1041513), (33, 662781), (37, 591129), (63, 347171), (77, 284049), (99, 220927), (111, 197043), (231, 94683), (259, 84447), (333, 65681), (407, 53739), (693, 31561), (777, 28149), (853, 25641), (1221, 17913), (2331, 9383), (2559, 8547), (2849, 7677), (3663, 5971)]