397804880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{1801}}^1$

素因数の和:2076

約数の個数: 80

約数和(自身を含む): 1013560128

約数和(自身を除く): 615755248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 251, 440, 502, 880, 1004, 1255, 1801, 2008, 2510, 2761, 3602, 4016, 5020, 5522, 7204, 9005, 10040, 11044, 13805, 14408, 18010, 19811, 20080, 22088, 27610, 28816, 36020, 39622, 44176, 55220, 72040, 79244, 99055, 110440, 144080, 158488, 198110, 220880, 316976, 396220, 452051, 792440, 904102, 1584880, 1808204, 2260255, 3616408, 4520510, 4972561, 7232816, 9041020, 9945122, 18082040, 19890244, 24862805, 36164080, 39780488, 49725610, 79560976, 99451220, 198902440, 397804880]

約数ペア:

[(1, 397804880), (2, 198902440), (4, 99451220), (5, 79560976), (8, 49725610), (10, 39780488), (11, 36164080), (16, 24862805), (20, 19890244), (22, 18082040), (40, 9945122), (44, 9041020), (55, 7232816), (80, 4972561), (88, 4520510), (110, 3616408), (176, 2260255), (220, 1808204), (251, 1584880), (440, 904102), (502, 792440), (880, 452051), (1004, 396220), (1255, 316976), (1801, 220880), (2008, 198110), (2510, 158488), (2761, 144080), (3602, 110440), (4016, 99055), (5020, 79244), (5522, 72040), (7204, 55220), (9005, 44176), (10040, 39622), (11044, 36020), (13805, 28816), (14408, 27610), (18010, 22088), (19811, 20080)]