61740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3$

素因数の和:36

約数の個数: 72

約数和(自身を含む): 218400

約数和(自身を除く): 156660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 686, 735, 882, 980, 1029, 1260, 1372, 1470, 1715, 1764, 2058, 2205, 2940, 3087, 3430, 4116, 4410, 5145, 6174, 6860, 8820, 10290, 12348, 15435, 20580, 30870, 61740]

約数ペア:

[(1, 61740), (2, 30870), (3, 20580), (4, 15435), (5, 12348), (6, 10290), (7, 8820), (9, 6860), (10, 6174), (12, 5145), (14, 4410), (15, 4116), (18, 3430), (20, 3087), (21, 2940), (28, 2205), (30, 2058), (35, 1764), (36, 1715), (42, 1470), (45, 1372), (49, 1260), (60, 1029), (63, 980), (70, 882), (84, 735), (90, 686), (98, 630), (105, 588), (126, 490), (140, 441), (147, 420), (180, 343), (196, 315), (210, 294), (245, 252)]