21987560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4133}}^1$

素因数の和:4170

約数の個数: 64

約数和(自身を含む): 59529600

約数和(自身を除く): 37542040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4133, 5320, 8266, 16532, 20665, 28931, 33064, 41330, 57862, 78527, 82660, 115724, 144655, 157054, 165320, 231448, 289310, 314108, 392635, 549689, 578620, 628216, 785270, 1099378, 1157240, 1570540, 2198756, 2748445, 3141080, 4397512, 5496890, 10993780, 21987560]

約数ペア:

[(1, 21987560), (2, 10993780), (4, 5496890), (5, 4397512), (7, 3141080), (8, 2748445), (10, 2198756), (14, 1570540), (19, 1157240), (20, 1099378), (28, 785270), (35, 628216), (38, 578620), (40, 549689), (56, 392635), (70, 314108), (76, 289310), (95, 231448), (133, 165320), (140, 157054), (152, 144655), (190, 115724), (266, 82660), (280, 78527), (380, 57862), (532, 41330), (665, 33064), (760, 28931), (1064, 20665), (1330, 16532), (2660, 8266), (4133, 5320)]