20719575

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1297}}^1$

素因数の和:1384

約数の個数: 36

約数和(自身を含む): 37662768

約数和(自身を除く): 16943193

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1297, 1775, 3195, 3891, 5325, 6485, 11673, 15975, 19455, 32425, 58365, 92087, 97275, 276261, 291825, 460435, 828783, 1381305, 2302175, 4143915, 6906525, 20719575]

約数ペア:

[(1, 20719575), (3, 6906525), (5, 4143915), (9, 2302175), (15, 1381305), (25, 828783), (45, 460435), (71, 291825), (75, 276261), (213, 97275), (225, 92087), (355, 58365), (639, 32425), (1065, 19455), (1297, 15975), (1775, 11673), (3195, 6485), (3891, 5325)]