19890640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3229}}^1$

素因数の和:3260

約数の個数: 80

約数和(自身を含む): 57674880

約数和(自身を除く): 37784240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3229, 6160, 6458, 12916, 16145, 22603, 25832, 32290, 35519, 45206, 51664, 64580, 71038, 90412, 113015, 129160, 142076, 177595, 180824, 226030, 248633, 258320, 284152, 355190, 361648, 452060, 497266, 568304, 710380, 904120, 994532, 1243165, 1420760, 1808240, 1989064, 2486330, 2841520, 3978128, 4972660, 9945320, 19890640]

約数ペア:

[(1, 19890640), (2, 9945320), (4, 4972660), (5, 3978128), (7, 2841520), (8, 2486330), (10, 1989064), (11, 1808240), (14, 1420760), (16, 1243165), (20, 994532), (22, 904120), (28, 710380), (35, 568304), (40, 497266), (44, 452060), (55, 361648), (56, 355190), (70, 284152), (77, 258320), (80, 248633), (88, 226030), (110, 180824), (112, 177595), (140, 142076), (154, 129160), (176, 113015), (220, 90412), (280, 71038), (308, 64580), (385, 51664), (440, 45206), (560, 35519), (616, 32290), (770, 25832), (880, 22603), (1232, 16145), (1540, 12916), (3080, 6458), (3229, 6160)]