21000833285

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{245897}}^1$

素因数の和:245981

約数の個数: 32

約数和(自身を含む): 28327449600

約数和(自身を除く): 7326616315

約数列:

[1, 5, 19, 29, 31, 95, 145, 155, 551, 589, 899, 2755, 2945, 4495, 17081, 85405, 245897, 1229485, 4672043, 7131013, 7622807, 23360215, 35655065, 38114035, 135489247, 144833333, 221061403, 677446235, 724166665, 1105307015, 4200166657, 21000833285]

約数ペア:

[(1, 21000833285), (5, 4200166657), (19, 1105307015), (29, 724166665), (31, 677446235), (95, 221061403), (145, 144833333), (155, 135489247), (551, 38114035), (589, 35655065), (899, 23360215), (2755, 7622807), (2945, 7131013), (4495, 4672043), (17081, 1229485), (85405, 245897)]