21489594

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 51262464

約数和(自身を除く): 29772870

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 73, 86, 129, 146, 163, 219, 258, 301, 326, 438, 489, 511, 602, 903, 978, 1022, 1141, 1533, 1806, 2282, 3066, 3139, 3423, 6278, 6846, 7009, 9417, 11899, 14018, 18834, 21027, 21973, 23798, 35697, 42054, 43946, 49063, 65919, 71394, 83293, 98126, 131838, 147189, 166586, 249879, 294378, 499758, 511657, 1023314, 1534971, 3069942, 3581599, 7163198, 10744797, 21489594]

約数ペア:

[(1, 21489594), (2, 10744797), (3, 7163198), (6, 3581599), (7, 3069942), (14, 1534971), (21, 1023314), (42, 511657), (43, 499758), (73, 294378), (86, 249879), (129, 166586), (146, 147189), (163, 131838), (219, 98126), (258, 83293), (301, 71394), (326, 65919), (438, 49063), (489, 43946), (511, 42054), (602, 35697), (903, 23798), (978, 21973), (1022, 21027), (1141, 18834), (1533, 14018), (1806, 11899), (2282, 9417), (3066, 7009), (3139, 6846), (3423, 6278)]