21415806

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 50941440

約数和(自身を除く): 29525634

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 43, 46, 54, 69, 86, 129, 138, 207, 258, 387, 401, 414, 621, 774, 802, 989, 1161, 1203, 1242, 1978, 2322, 2406, 2967, 3609, 5934, 7218, 8901, 9223, 10827, 17243, 17802, 18446, 21654, 26703, 27669, 34486, 51729, 53406, 55338, 83007, 103458, 155187, 166014, 249021, 310374, 396589, 465561, 498042, 793178, 931122, 1189767, 2379534, 3569301, 7138602, 10707903, 21415806]

約数ペア:

[(1, 21415806), (2, 10707903), (3, 7138602), (6, 3569301), (9, 2379534), (18, 1189767), (23, 931122), (27, 793178), (43, 498042), (46, 465561), (54, 396589), (69, 310374), (86, 249021), (129, 166014), (138, 155187), (207, 103458), (258, 83007), (387, 55338), (401, 53406), (414, 51729), (621, 34486), (774, 27669), (802, 26703), (989, 21654), (1161, 18446), (1203, 17802), (1242, 17243), (1978, 10827), (2322, 9223), (2406, 8901), (2967, 7218), (3609, 5934)]