15721493739

素因数分解:

$3^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{389}}^1\times {\mathrm{1303}}^1$

素因数の和:1920

約数の個数: 48

約数和(自身を含む): 24581756160

約数和(自身を除く): 8860262421

約数列:

[1, 3, 7, 21, 49, 147, 211, 389, 633, 1167, 1303, 1477, 2723, 3909, 4431, 8169, 9121, 10339, 19061, 27363, 31017, 57183, 63847, 82079, 191541, 246237, 274933, 506867, 574553, 824799, 1520601, 1723659, 1924531, 3548069, 4021871, 5773593, 10644207, 12065613, 13471717, 24836483, 40415151, 74509449, 106948937, 320846811, 748642559, 2245927677, 5240497913, 15721493739]

約数ペア:

[(1, 15721493739), (3, 5240497913), (7, 2245927677), (21, 748642559), (49, 320846811), (147, 106948937), (211, 74509449), (389, 40415151), (633, 24836483), (1167, 13471717), (1303, 12065613), (1477, 10644207), (2723, 5773593), (3909, 4021871), (4431, 3548069), (8169, 1924531), (9121, 1723659), (10339, 1520601), (19061, 824799), (27363, 574553), (31017, 506867), (57183, 274933), (63847, 246237), (82079, 191541)]