21960561

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2393}}^1$

素因数の和:2445

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 14811279

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2393, 3059, 7179, 9177, 16751, 45467, 50253, 55039, 136401, 165117, 318269, 385273, 954807, 1045741, 1155819, 3137223, 7320187, 21960561]

約数ペア:

[(1, 21960561), (3, 7320187), (7, 3137223), (19, 1155819), (21, 1045741), (23, 954807), (57, 385273), (69, 318269), (133, 165117), (161, 136401), (399, 55039), (437, 50253), (483, 45467), (1311, 16751), (2393, 9177), (3059, 7179)]