68890280

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{13147}}^1$

素因数の和:13289

約数の個数: 32

約数和(自身を含む): 156198240

約数和(自身を除く): 87307960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 13147, 26294, 52588, 65735, 105176, 131470, 262940, 525880, 1722257, 3444514, 6889028, 8611285, 13778056, 17222570, 34445140, 68890280]

約数ペア:

[(1, 68890280), (2, 34445140), (4, 17222570), (5, 13778056), (8, 8611285), (10, 6889028), (20, 3444514), (40, 1722257), (131, 525880), (262, 262940), (524, 131470), (655, 105176), (1048, 65735), (1310, 52588), (2620, 26294), (5240, 13147)]