20707504

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{503}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 41997312

約数和(自身を除く): 21289808

約数列:

[1, 2, 4, 8, 16, 31, 62, 83, 124, 166, 248, 332, 496, 503, 664, 1006, 1328, 2012, 2573, 4024, 5146, 8048, 10292, 15593, 20584, 31186, 41168, 41749, 62372, 83498, 124744, 166996, 249488, 333992, 667984, 1294219, 2588438, 5176876, 10353752, 20707504]

約数ペア:

[(1, 20707504), (2, 10353752), (4, 5176876), (8, 2588438), (16, 1294219), (31, 667984), (62, 333992), (83, 249488), (124, 166996), (166, 124744), (248, 83498), (332, 62372), (496, 41749), (503, 41168), (664, 31186), (1006, 20584), (1328, 15593), (2012, 10292), (2573, 8048), (4024, 5146)]