21991380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1171}}^1$

素因数の和:1496

約数の個数: 48

約数和(自身を含む): 61825344

約数和(自身を除く): 39833964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 313, 626, 939, 1171, 1252, 1565, 1878, 2342, 3130, 3513, 3756, 4684, 4695, 5855, 6260, 7026, 9390, 11710, 14052, 17565, 18780, 23420, 35130, 70260, 366523, 733046, 1099569, 1466092, 1832615, 2199138, 3665230, 4398276, 5497845, 7330460, 10995690, 21991380]

約数ペア:

[(1, 21991380), (2, 10995690), (3, 7330460), (4, 5497845), (5, 4398276), (6, 3665230), (10, 2199138), (12, 1832615), (15, 1466092), (20, 1099569), (30, 733046), (60, 366523), (313, 70260), (626, 35130), (939, 23420), (1171, 18780), (1252, 17565), (1565, 14052), (1878, 11710), (2342, 9390), (3130, 7026), (3513, 6260), (3756, 5855), (4684, 4695)]