20523165

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 38610432

約数和(自身を除く): 18087267

約数列:

[1, 3, 5, 13, 15, 17, 39, 41, 51, 65, 85, 123, 151, 195, 205, 221, 255, 453, 533, 615, 663, 697, 755, 1105, 1599, 1963, 2091, 2265, 2567, 2665, 3315, 3485, 5889, 6191, 7701, 7995, 9061, 9815, 10455, 12835, 18573, 27183, 29445, 30955, 33371, 38505, 45305, 80483, 92865, 100113, 105247, 135915, 166855, 241449, 315741, 402415, 500565, 526235, 1207245, 1368211, 1578705, 4104633, 6841055, 20523165]

約数ペア:

[(1, 20523165), (3, 6841055), (5, 4104633), (13, 1578705), (15, 1368211), (17, 1207245), (39, 526235), (41, 500565), (51, 402415), (65, 315741), (85, 241449), (123, 166855), (151, 135915), (195, 105247), (205, 100113), (221, 92865), (255, 80483), (453, 45305), (533, 38505), (615, 33371), (663, 30955), (697, 29445), (755, 27183), (1105, 18573), (1599, 12835), (1963, 10455), (2091, 9815), (2265, 9061), (2567, 7995), (2665, 7701), (3315, 6191), (3485, 5889)]