21427497

素因数分解:

$3^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:74

約数の個数: 112

約数和(自身を含む): 44069760

約数和(自身を除く): 22642263

約数列:

[1, 3, 7, 9, 13, 17, 19, 21, 27, 39, 51, 57, 63, 81, 91, 117, 119, 133, 153, 171, 189, 221, 243, 247, 273, 323, 351, 357, 399, 459, 513, 567, 663, 729, 741, 819, 969, 1053, 1071, 1197, 1377, 1539, 1547, 1701, 1729, 1989, 2223, 2261, 2457, 2907, 3159, 3213, 3591, 4131, 4199, 4617, 4641, 5103, 5187, 5967, 6669, 6783, 7371, 8721, 9477, 9639, 10773, 12393, 12597, 13851, 13923, 15561, 17901, 20007, 20349, 22113, 26163, 28917, 29393, 32319, 37791, 41769, 46683, 53703, 60021, 61047, 66339, 78489, 86751, 88179, 96957, 113373, 125307, 140049, 161109, 180063, 183141, 235467, 264537, 340119, 375921, 420147, 549423, 793611, 1020357, 1127763, 1260441, 1648269, 2380833, 3061071, 7142499, 21427497]

約数ペア:

[(1, 21427497), (3, 7142499), (7, 3061071), (9, 2380833), (13, 1648269), (17, 1260441), (19, 1127763), (21, 1020357), (27, 793611), (39, 549423), (51, 420147), (57, 375921), (63, 340119), (81, 264537), (91, 235467), (117, 183141), (119, 180063), (133, 161109), (153, 140049), (171, 125307), (189, 113373), (221, 96957), (243, 88179), (247, 86751), (273, 78489), (323, 66339), (351, 61047), (357, 60021), (399, 53703), (459, 46683), (513, 41769), (567, 37791), (663, 32319), (729, 29393), (741, 28917), (819, 26163), (969, 22113), (1053, 20349), (1071, 20007), (1197, 17901), (1377, 15561), (1539, 13923), (1547, 13851), (1701, 12597), (1729, 12393), (1989, 10773), (2223, 9639), (2261, 9477), (2457, 8721), (2907, 7371), (3159, 6783), (3213, 6669), (3591, 5967), (4131, 5187), (4199, 5103), (4617, 4641)]