21771.0000000

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3371}}^1$

素因数の和:3424

約数の個数: 48

約数和(自身を含む): 23792832

約数和(自身を除く): 15500172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 3371, 6742, 10113, 13484, 16855, 20226, 33710, 40452, 50565, 67420, 101130, 138211, 202260, 276422, 414633, 552844, 691055, 829266, 1382110, 1658532, 2073165, 2764220, 4146330, 8292660]

約数ペア:

[(1, 8292660), (2, 4146330), (3, 2764220), (4, 2073165), (5, 1658532), (6, 1382110), (10, 829266), (12, 691055), (15, 552844), (20, 414633), (30, 276422), (41, 202260), (60, 138211), (82, 101130), (123, 67420), (164, 50565), (205, 40452), (246, 33710), (410, 20226), (492, 16855), (615, 13484), (820, 10113), (1230, 6742), (2460, 3371)]