21521900

素因数分解:

$2^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{2593}}^1$

素因数の和:2690

約数の個数: 36

約数和(自身を含む): 47283432

約数和(自身を除く): 25761532

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 166, 332, 415, 830, 1660, 2075, 2593, 4150, 5186, 8300, 10372, 12965, 25930, 51860, 64825, 129650, 215219, 259300, 430438, 860876, 1076095, 2152190, 4304380, 5380475, 10760950, 21521900]

約数ペア:

[(1, 21521900), (2, 10760950), (4, 5380475), (5, 4304380), (10, 2152190), (20, 1076095), (25, 860876), (50, 430438), (83, 259300), (100, 215219), (166, 129650), (332, 64825), (415, 51860), (830, 25930), (1660, 12965), (2075, 10372), (2593, 8300), (4150, 5186)]