21002320

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3163}}^1$

素因数の和:3259

約数の個数: 40

約数和(自身を含む): 49434336

約数和(自身を除く): 28432016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3163, 3320, 6326, 6640, 12652, 15815, 25304, 31630, 50608, 63260, 126520, 253040, 262529, 525058, 1050116, 1312645, 2100232, 2625290, 4200464, 5250580, 10501160, 21002320]

約数ペア:

[(1, 21002320), (2, 10501160), (4, 5250580), (5, 4200464), (8, 2625290), (10, 2100232), (16, 1312645), (20, 1050116), (40, 525058), (80, 262529), (83, 253040), (166, 126520), (332, 63260), (415, 50608), (664, 31630), (830, 25304), (1328, 15815), (1660, 12652), (3163, 6640), (3320, 6326)]