21630665

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 31138560

約数和(自身を除く): 9507895

約数列:

[1, 5, 7, 29, 35, 101, 145, 203, 211, 505, 707, 1015, 1055, 1477, 2929, 3535, 6119, 7385, 14645, 20503, 21311, 30595, 42833, 102515, 106555, 149177, 214165, 618019, 745885, 3090095, 4326133, 21630665]

約数ペア:

[(1, 21630665), (5, 4326133), (7, 3090095), (29, 745885), (35, 618019), (101, 214165), (145, 149177), (203, 106555), (211, 102515), (505, 42833), (707, 30595), (1015, 21311), (1055, 20503), (1477, 14645), (2929, 7385), (3535, 6119)]