81981510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{210209}}^1$

素因数の和:210232

約数の個数: 32

約数和(自身を含む): 211891680

約数和(自身を除く): 129910170

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 210209, 420418, 630627, 1051045, 1261254, 2102090, 2732717, 3153135, 5465434, 6306270, 8198151, 13663585, 16396302, 27327170, 40990755, 81981510]

約数ペア:

[(1, 81981510), (2, 40990755), (3, 27327170), (5, 16396302), (6, 13663585), (10, 8198151), (13, 6306270), (15, 5465434), (26, 3153135), (30, 2732717), (39, 2102090), (65, 1261254), (78, 1051045), (130, 630627), (195, 420418), (390, 210209)]