21284175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25799}}^1$

素因数の和:25823

約数の個数: 24

約数和(自身を含む): 38390400

約数和(自身を除く): 17106225

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25799, 77397, 128995, 283789, 386985, 644975, 851367, 1418945, 1934925, 4256835, 7094725, 21284175]

約数ペア:

[(1, 21284175), (3, 7094725), (5, 4256835), (11, 1934925), (15, 1418945), (25, 851367), (33, 644975), (55, 386985), (75, 283789), (165, 128995), (275, 77397), (825, 25799)]