21023792080

素因数分解:

$2^4\times 5^1\times {\mathrm{787}}^1\times {\mathrm{333923}}^1$

素因数の和:334723

約数の個数: 40

約数和(自身を含む): 48942572832

約数和(自身を除く): 27918780752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 787, 1574, 3148, 3935, 6296, 7870, 12592, 15740, 31480, 62960, 333923, 667846, 1335692, 1669615, 2671384, 3339230, 5342768, 6678460, 13356920, 26713840, 262797401, 525594802, 1051189604, 1313987005, 2102379208, 2627974010, 4204758416, 5255948020, 10511896040, 21023792080]

約数ペア:

[(1, 21023792080), (2, 10511896040), (4, 5255948020), (5, 4204758416), (8, 2627974010), (10, 2102379208), (16, 1313987005), (20, 1051189604), (40, 525594802), (80, 262797401), (787, 26713840), (1574, 13356920), (3148, 6678460), (3935, 5342768), (6296, 3339230), (7870, 2671384), (12592, 1669615), (15740, 1335692), (31480, 667846), (62960, 333923)]