21813273

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 34435200

約数和(自身を除く): 12621927

約数列:

[1, 3, 9, 19, 27, 57, 101, 171, 303, 421, 513, 909, 1263, 1919, 2727, 3789, 5757, 7999, 11367, 17271, 23997, 42521, 51813, 71991, 127563, 215973, 382689, 807899, 1148067, 2423697, 7271091, 21813273]

約数ペア:

[(1, 21813273), (3, 7271091), (9, 2423697), (19, 1148067), (27, 807899), (57, 382689), (101, 215973), (171, 127563), (303, 71991), (421, 51813), (513, 42521), (909, 23997), (1263, 17271), (1919, 11367), (2727, 7999), (3789, 5757)]