20373515

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 6842485

約数列:

[1, 5, 23, 29, 41, 115, 145, 149, 205, 667, 745, 943, 1189, 3335, 3427, 4321, 4715, 5945, 6109, 17135, 21605, 27347, 30545, 99383, 136735, 140507, 177161, 496915, 702535, 885805, 4074703, 20373515]

約数ペア:

[(1, 20373515), (5, 4074703), (23, 885805), (29, 702535), (41, 496915), (115, 177161), (145, 140507), (149, 136735), (205, 99383), (667, 30545), (745, 27347), (943, 21605), (1189, 17135), (3335, 6109), (3427, 5945), (4321, 4715)]