20448195

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 35808480

約数和(自身を除く): 15360285

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 89, 159, 255, 265, 267, 289, 445, 795, 867, 901, 1335, 1445, 1513, 2703, 4335, 4505, 4539, 4717, 7565, 13515, 14151, 15317, 22695, 23585, 25721, 45951, 70755, 76585, 77163, 80189, 128605, 229755, 240567, 385815, 400945, 1202835, 1363213, 4089639, 6816065, 20448195]

約数ペア:

[(1, 20448195), (3, 6816065), (5, 4089639), (15, 1363213), (17, 1202835), (51, 400945), (53, 385815), (85, 240567), (89, 229755), (159, 128605), (255, 80189), (265, 77163), (267, 76585), (289, 70755), (445, 45951), (795, 25721), (867, 23585), (901, 22695), (1335, 15317), (1445, 14151), (1513, 13515), (2703, 7565), (4335, 4717), (4505, 4539)]