20619261

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 34070400

約数和(自身を除く): 13451139

約数列:

[1, 3, 9, 13, 29, 39, 59, 87, 103, 117, 177, 261, 309, 377, 531, 767, 927, 1131, 1339, 1711, 2301, 2987, 3393, 4017, 5133, 6077, 6903, 8961, 12051, 15399, 18231, 22243, 26883, 38831, 54693, 66729, 79001, 116493, 176233, 200187, 237003, 349479, 528699, 711009, 1586097, 2291029, 6873087, 20619261]

約数ペア:

[(1, 20619261), (3, 6873087), (9, 2291029), (13, 1586097), (29, 711009), (39, 528699), (59, 349479), (87, 237003), (103, 200187), (117, 176233), (177, 116493), (261, 79001), (309, 66729), (377, 54693), (531, 38831), (767, 26883), (927, 22243), (1131, 18231), (1339, 15399), (1711, 12051), (2301, 8961), (2987, 6903), (3393, 6077), (4017, 5133)]