21415394

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:615

約数の個数: 64

約数和(自身を含む): 45480960

約数和(自身を除く): 24065566

約数列:

[1, 2, 7, 11, 13, 14, 19, 22, 26, 38, 77, 91, 133, 143, 154, 182, 209, 247, 266, 286, 418, 494, 563, 1001, 1126, 1463, 1729, 2002, 2717, 2926, 3458, 3941, 5434, 6193, 7319, 7882, 10697, 12386, 14638, 19019, 21394, 38038, 43351, 51233, 74879, 80509, 86702, 102466, 117667, 139061, 149758, 161018, 235334, 278122, 563563, 823669, 973427, 1127126, 1529671, 1647338, 1946854, 3059342, 10707697, 21415394]

約数ペア:

[(1, 21415394), (2, 10707697), (7, 3059342), (11, 1946854), (13, 1647338), (14, 1529671), (19, 1127126), (22, 973427), (26, 823669), (38, 563563), (77, 278122), (91, 235334), (133, 161018), (143, 149758), (154, 139061), (182, 117667), (209, 102466), (247, 86702), (266, 80509), (286, 74879), (418, 51233), (494, 43351), (563, 38038), (1001, 21394), (1126, 19019), (1463, 14638), (1729, 12386), (2002, 10697), (2717, 7882), (2926, 7319), (3458, 6193), (3941, 5434)]