19745460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15671}}^1$

素因数の和:15693

約数の個数: 72

約数和(自身を含む): 68455296

約数和(自身を除く): 48709836

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15671, 31342, 47013, 62684, 78355, 94026, 109697, 141039, 156710, 188052, 219394, 235065, 282078, 313420, 329091, 438788, 470130, 548485, 564156, 658182, 705195, 940260, 987273, 1096970, 1316364, 1410390, 1645455, 1974546, 2193940, 2820780, 3290910, 3949092, 4936365, 6581820, 9872730, 19745460]

約数ペア:

[(1, 19745460), (2, 9872730), (3, 6581820), (4, 4936365), (5, 3949092), (6, 3290910), (7, 2820780), (9, 2193940), (10, 1974546), (12, 1645455), (14, 1410390), (15, 1316364), (18, 1096970), (20, 987273), (21, 940260), (28, 705195), (30, 658182), (35, 564156), (36, 548485), (42, 470130), (45, 438788), (60, 329091), (63, 313420), (70, 282078), (84, 235065), (90, 219394), (105, 188052), (126, 156710), (140, 141039), (180, 109697), (210, 94026), (252, 78355), (315, 62684), (420, 47013), (630, 31342), (1260, 15671)]