21000816718

素因数分解:

$2^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1\times {\mathrm{51349}}^1$

素因数の和:51712

約数の個数: 32

約数和(自身を含む): 36439603200

約数和(自身を除く): 15438786482

約数列:

[1, 2, 7, 14, 131, 223, 262, 446, 917, 1561, 1834, 3122, 29213, 51349, 58426, 102698, 204491, 359443, 408982, 718886, 6726719, 11450827, 13453438, 22901654, 47087033, 80155789, 94174066, 160311578, 1500058337, 3000116674, 10500408359, 21000816718]

約数ペア:

[(1, 21000816718), (2, 10500408359), (7, 3000116674), (14, 1500058337), (131, 160311578), (223, 94174066), (262, 80155789), (446, 47087033), (917, 22901654), (1561, 13453438), (1834, 11450827), (3122, 6726719), (29213, 718886), (51349, 408982), (58426, 359443), (102698, 204491)]