21120396

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^2$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 55927872

約数和(自身を除く): 34807476

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 43, 44, 61, 66, 86, 122, 129, 132, 172, 183, 244, 258, 366, 473, 516, 671, 732, 946, 1342, 1419, 1892, 2013, 2623, 2684, 2838, 3721, 4026, 5246, 5676, 7442, 7869, 8052, 10492, 11163, 14884, 15738, 22326, 28853, 31476, 40931, 44652, 57706, 81862, 86559, 115412, 122793, 160003, 163724, 173118, 245586, 320006, 346236, 480009, 491172, 640012, 960018, 1760033, 1920036, 3520066, 5280099, 7040132, 10560198, 21120396]

約数ペア:

[(1, 21120396), (2, 10560198), (3, 7040132), (4, 5280099), (6, 3520066), (11, 1920036), (12, 1760033), (22, 960018), (33, 640012), (43, 491172), (44, 480009), (61, 346236), (66, 320006), (86, 245586), (122, 173118), (129, 163724), (132, 160003), (172, 122793), (183, 115412), (244, 86559), (258, 81862), (366, 57706), (473, 44652), (516, 40931), (671, 31476), (732, 28853), (946, 22326), (1342, 15738), (1419, 14884), (1892, 11163), (2013, 10492), (2623, 8052), (2684, 7869), (2838, 7442), (3721, 5676), (4026, 5246)]