213042987

素因数分解:

$3^3\times {\mathrm{53}}^4$

素因数の和:221

約数の個数: 20

約数和(自身を含む): 321688840

約数和(自身を除く): 108645853

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 2809, 8427, 25281, 75843, 148877, 446631, 1339893, 4019679, 7890481, 23671443, 71014329, 213042987]

約数ペア:

[(1, 213042987), (3, 71014329), (9, 23671443), (27, 7890481), (53, 4019679), (159, 1339893), (477, 446631), (1431, 148877), (2809, 75843), (8427, 25281)]