21167019980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2503}}^1\times {\mathrm{10313}}^1$

素因数の和:12866

約数の個数: 48

約数和(自身を含む): 45557515584

約数和(自身を除く): 24390495604

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2503, 5006, 10012, 10313, 12515, 20626, 25030, 41252, 50060, 51565, 102623, 103130, 205246, 206260, 410492, 422833, 513115, 845666, 1026230, 1691332, 2052460, 2114165, 4228330, 8456660, 25813439, 51626878, 103253756, 129067195, 258134390, 516268780, 1058350999, 2116701998, 4233403996, 5291754995, 10583509990, 21167019980]

約数ペア:

[(1, 21167019980), (2, 10583509990), (4, 5291754995), (5, 4233403996), (10, 2116701998), (20, 1058350999), (41, 516268780), (82, 258134390), (164, 129067195), (205, 103253756), (410, 51626878), (820, 25813439), (2503, 8456660), (5006, 4228330), (10012, 2114165), (10313, 2052460), (12515, 1691332), (20626, 1026230), (25030, 845666), (41252, 513115), (50060, 422833), (51565, 410492), (102623, 206260), (103130, 205246)]