19755540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15679}}^1$

素因数の和:15701

約数の個数: 72

約数和(自身を含む): 68490240

約数和(自身を除く): 48734700

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, 15679, 31358, 47037, 62716, 78395, 94074, 109753, 141111, 156790, 188148, 219506, 235185, 282222, 313580, 329259, 439012, 470370, 548765, 564444, 658518, 705555, 940740, 987777, 1097530, 1317036, 1411110, 1646295, 1975554, 2195060, 2822220, 3292590, 3951108, 4938885, 6585180, 9877770, 19755540]

約数ペア:

[(1, 19755540), (2, 9877770), (3, 6585180), (4, 4938885), (5, 3951108), (6, 3292590), (7, 2822220), (9, 2195060), (10, 1975554), (12, 1646295), (14, 1411110), (15, 1317036), (18, 1097530), (20, 987777), (21, 940740), (28, 705555), (30, 658518), (35, 564444), (36, 548765), (42, 470370), (45, 439012), (60, 329259), (63, 313580), (70, 282222), (84, 235185), (90, 219506), (105, 188148), (126, 156790), (140, 141111), (180, 109753), (210, 94074), (252, 78395), (315, 62716), (420, 47037), (630, 31358), (1260, 15679)]