21007428

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{433}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 53079936

約数和(自身を除く): 32072508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 311, 433, 622, 866, 933, 1244, 1299, 1732, 1866, 2598, 3732, 4043, 5196, 5629, 8086, 11258, 12129, 16172, 16887, 22516, 24258, 33774, 48516, 67548, 134663, 269326, 403989, 538652, 807978, 1615956, 1750619, 3501238, 5251857, 7002476, 10503714, 21007428]

約数ペア:

[(1, 21007428), (2, 10503714), (3, 7002476), (4, 5251857), (6, 3501238), (12, 1750619), (13, 1615956), (26, 807978), (39, 538652), (52, 403989), (78, 269326), (156, 134663), (311, 67548), (433, 48516), (622, 33774), (866, 24258), (933, 22516), (1244, 16887), (1299, 16172), (1732, 12129), (1866, 11258), (2598, 8086), (3732, 5629), (4043, 5196)]