21303225

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1297}}^1$

素因数の和:1386

約数の個数: 36

約数和(自身を含む): 38708956

約数和(自身を除く): 17405731

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1297, 1825, 3285, 3891, 5475, 6485, 11673, 16425, 19455, 32425, 58365, 94681, 97275, 284043, 291825, 473405, 852129, 1420215, 2367025, 4260645, 7101075, 21303225]

約数ペア:

[(1, 21303225), (3, 7101075), (5, 4260645), (9, 2367025), (15, 1420215), (25, 852129), (45, 473405), (73, 291825), (75, 284043), (219, 97275), (225, 94681), (365, 58365), (657, 32425), (1095, 19455), (1297, 16425), (1825, 11673), (3285, 6485), (3891, 5475)]