18719865

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 33965568

約数和(自身を除く): 15245703

約数列:

[1, 3, 5, 9, 15, 45, 47, 53, 141, 159, 167, 235, 265, 423, 477, 501, 705, 795, 835, 1503, 2115, 2385, 2491, 2505, 7473, 7515, 7849, 8851, 12455, 22419, 23547, 26553, 37365, 39245, 44255, 70641, 79659, 112095, 117735, 132765, 353205, 398295, 415997, 1247991, 2079985, 3743973, 6239955, 18719865]

約数ペア:

[(1, 18719865), (3, 6239955), (5, 3743973), (9, 2079985), (15, 1247991), (45, 415997), (47, 398295), (53, 353205), (141, 132765), (159, 117735), (167, 112095), (235, 79659), (265, 70641), (423, 44255), (477, 39245), (501, 37365), (705, 26553), (795, 23547), (835, 22419), (1503, 12455), (2115, 8851), (2385, 7849), (2491, 7515), (2505, 7473)]