20980128

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16811}}^1$

素因数の和:16837

約数の個数: 48

約数和(自身を含む): 59312736

約数和(自身を除く): 38332608

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16811, 33622, 50433, 67244, 100866, 134488, 201732, 218543, 268976, 403464, 437086, 537952, 655629, 806928, 874172, 1311258, 1613856, 1748344, 2622516, 3496688, 5245032, 6993376, 10490064, 20980128]

約数ペア:

[(1, 20980128), (2, 10490064), (3, 6993376), (4, 5245032), (6, 3496688), (8, 2622516), (12, 1748344), (13, 1613856), (16, 1311258), (24, 874172), (26, 806928), (32, 655629), (39, 537952), (48, 437086), (52, 403464), (78, 268976), (96, 218543), (104, 201732), (156, 134488), (208, 100866), (312, 67244), (416, 50433), (624, 33622), (1248, 16811)]