20678355

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3259}}^1$

素因数の和:3320

約数の個数: 32

約数和(自身を含む): 37555200

約数和(自身を除く): 16876845

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 135, 141, 235, 423, 705, 1269, 2115, 3259, 6345, 9777, 16295, 29331, 48885, 87993, 146655, 153173, 439965, 459519, 765865, 1378557, 2297595, 4135671, 6892785, 20678355]

約数ペア:

[(1, 20678355), (3, 6892785), (5, 4135671), (9, 2297595), (15, 1378557), (27, 765865), (45, 459519), (47, 439965), (135, 153173), (141, 146655), (235, 87993), (423, 48885), (705, 29331), (1269, 16295), (2115, 9777), (3259, 6345)]