21490406

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{467}}^1$

素因数の和:668

約数の個数: 32

約数和(自身を含む): 39087360

約数和(自身を除く): 17596954

約数列:

[1, 2, 7, 14, 19, 38, 133, 173, 266, 346, 467, 934, 1211, 2422, 3269, 3287, 6538, 6574, 8873, 17746, 23009, 46018, 62111, 80791, 124222, 161582, 565537, 1131074, 1535029, 3070058, 10745203, 21490406]

約数ペア:

[(1, 21490406), (2, 10745203), (7, 3070058), (14, 1535029), (19, 1131074), (38, 565537), (133, 161582), (173, 124222), (266, 80791), (346, 62111), (467, 46018), (934, 23009), (1211, 17746), (2422, 8873), (3269, 6574), (3287, 6538)]