21643412

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 44782080

約数和(自身を除く): 23138668

約数列:

[1, 2, 4, 7, 14, 28, 67, 83, 134, 139, 166, 268, 278, 332, 469, 556, 581, 938, 973, 1162, 1876, 1946, 2324, 3892, 5561, 9313, 11122, 11537, 18626, 22244, 23074, 37252, 38927, 46148, 65191, 77854, 80759, 130382, 155708, 161518, 260764, 323036, 772979, 1545958, 3091916, 5410853, 10821706, 21643412]

約数ペア:

[(1, 21643412), (2, 10821706), (4, 5410853), (7, 3091916), (14, 1545958), (28, 772979), (67, 323036), (83, 260764), (134, 161518), (139, 155708), (166, 130382), (268, 80759), (278, 77854), (332, 65191), (469, 46148), (556, 38927), (581, 37252), (938, 23074), (973, 22244), (1162, 18626), (1876, 11537), (1946, 11122), (2324, 9313), (3892, 5561)]