21273705

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4259}}^1$

素因数の和:4310

約数の個数: 32

約数和(自身を含む): 38851200

約数和(自身を除く): 17577495

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4259, 4995, 12777, 21295, 38331, 63885, 114993, 157583, 191655, 472749, 574965, 787915, 1418247, 2363745, 4254741, 7091235, 21273705]

約数ペア:

[(1, 21273705), (3, 7091235), (5, 4254741), (9, 2363745), (15, 1418247), (27, 787915), (37, 574965), (45, 472749), (111, 191655), (135, 157583), (185, 114993), (333, 63885), (555, 38331), (999, 21295), (1665, 12777), (4259, 4995)]