21922257

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 14849583

約数列:

[1, 3, 7, 19, 21, 47, 49, 57, 133, 141, 147, 167, 329, 399, 501, 893, 931, 987, 1169, 2303, 2679, 2793, 3173, 3507, 6251, 6909, 7849, 8183, 9519, 18753, 22211, 23547, 24549, 43757, 54943, 66633, 131271, 149131, 155477, 164829, 384601, 447393, 466431, 1043917, 1153803, 3131751, 7307419, 21922257]

約数ペア:

[(1, 21922257), (3, 7307419), (7, 3131751), (19, 1153803), (21, 1043917), (47, 466431), (49, 447393), (57, 384601), (133, 164829), (141, 155477), (147, 149131), (167, 131271), (329, 66633), (399, 54943), (501, 43757), (893, 24549), (931, 23547), (987, 22211), (1169, 18753), (2303, 9519), (2679, 8183), (2793, 7849), (3173, 6909), (3507, 6251)]