26980850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 56639232

約数和(自身を除く): 29658382

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 103, 130, 155, 169, 206, 310, 325, 338, 403, 515, 650, 775, 806, 845, 1030, 1339, 1550, 1690, 2015, 2575, 2678, 3193, 4030, 4225, 5150, 5239, 6386, 6695, 8450, 10075, 10478, 13390, 15965, 17407, 20150, 26195, 31930, 33475, 34814, 41509, 52390, 66950, 79825, 83018, 87035, 130975, 159650, 174070, 207545, 261950, 415090, 435175, 539617, 870350, 1037725, 1079234, 2075450, 2698085, 5396170, 13490425, 26980850]

約数ペア:

[(1, 26980850), (2, 13490425), (5, 5396170), (10, 2698085), (13, 2075450), (25, 1079234), (26, 1037725), (31, 870350), (50, 539617), (62, 435175), (65, 415090), (103, 261950), (130, 207545), (155, 174070), (169, 159650), (206, 130975), (310, 87035), (325, 83018), (338, 79825), (403, 66950), (515, 52390), (650, 41509), (775, 34814), (806, 33475), (845, 31930), (1030, 26195), (1339, 20150), (1550, 17407), (1690, 15965), (2015, 13390), (2575, 10478), (2678, 10075), (3193, 8450), (4030, 6695), (4225, 6386), (5150, 5239)]