81628872

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261631}}^1$

素因数の和:261653

約数の個数: 32

約数和(自身を含む): 219770880

約数和(自身を除く): 138142008

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 261631, 523262, 784893, 1046524, 1569786, 2093048, 3139572, 3401203, 6279144, 6802406, 10203609, 13604812, 20407218, 27209624, 40814436, 81628872]

約数ペア:

[(1, 81628872), (2, 40814436), (3, 27209624), (4, 20407218), (6, 13604812), (8, 10203609), (12, 6802406), (13, 6279144), (24, 3401203), (26, 3139572), (39, 2093048), (52, 1569786), (78, 1046524), (104, 784893), (156, 523262), (312, 261631)]