81564015

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6857}}^1$

素因数の和:6939

約数の個数: 32

約数和(自身を含む): 142865856

約数和(自身を除く): 61301841

約数列:

[1, 3, 5, 13, 15, 39, 61, 65, 183, 195, 305, 793, 915, 2379, 3965, 6857, 11895, 20571, 34285, 89141, 102855, 267423, 418277, 445705, 1254831, 1337115, 2091385, 5437601, 6274155, 16312803, 27188005, 81564015]

約数ペア:

[(1, 81564015), (3, 27188005), (5, 16312803), (13, 6274155), (15, 5437601), (39, 2091385), (61, 1337115), (65, 1254831), (183, 445705), (195, 418277), (305, 267423), (793, 102855), (915, 89141), (2379, 34285), (3965, 20571), (6857, 11895)]