21000339400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2561017}}^1$

素因数の和:2561074

約数の個数: 48

約数和(自身を含む): 50016681540

約数和(自身を除く): 29016342140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 4100, 8200, 2561017, 5122034, 10244068, 12805085, 20488136, 25610170, 51220340, 64025425, 102440680, 105001697, 128050850, 210003394, 256101700, 420006788, 512203400, 525008485, 840013576, 1050016970, 2100033940, 2625042425, 4200067880, 5250084850, 10500169700, 21000339400]

約数ペア:

[(1, 21000339400), (2, 10500169700), (4, 5250084850), (5, 4200067880), (8, 2625042425), (10, 2100033940), (20, 1050016970), (25, 840013576), (40, 525008485), (41, 512203400), (50, 420006788), (82, 256101700), (100, 210003394), (164, 128050850), (200, 105001697), (205, 102440680), (328, 64025425), (410, 51220340), (820, 25610170), (1025, 20488136), (1640, 12805085), (2050, 10244068), (4100, 5122034), (8200, 2561017)]