15721938455

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{21269}}^1$

素因数の和:21575

約数の個数: 32

約数和(自身を含む): 20582553600

約数和(自身を除く): 4860615145

約数列:

[1, 5, 19, 31, 95, 155, 251, 589, 1255, 2945, 4769, 7781, 21269, 23845, 38905, 106345, 147839, 404111, 659339, 739195, 2020555, 3296695, 5338519, 12527441, 26692595, 62637205, 101431861, 165494089, 507159305, 827470445, 3144387691, 15721938455]

約数ペア:

[(1, 15721938455), (5, 3144387691), (19, 827470445), (31, 507159305), (95, 165494089), (155, 101431861), (251, 62637205), (589, 26692595), (1255, 12527441), (2945, 5338519), (4769, 3296695), (7781, 2020555), (21269, 739195), (23845, 659339), (38905, 404111), (106345, 147839)]