17978408

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 41366400

約数和(自身を除く): 23387992

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 61, 76, 122, 133, 152, 244, 266, 277, 427, 488, 532, 554, 854, 1064, 1108, 1159, 1708, 1939, 2216, 2318, 3416, 3878, 4636, 5263, 7756, 8113, 9272, 10526, 15512, 16226, 16897, 21052, 32452, 33794, 36841, 42104, 64904, 67588, 73682, 118279, 135176, 147364, 236558, 294728, 321043, 473116, 642086, 946232, 1284172, 2247301, 2568344, 4494602, 8989204, 17978408]

約数ペア:

[(1, 17978408), (2, 8989204), (4, 4494602), (7, 2568344), (8, 2247301), (14, 1284172), (19, 946232), (28, 642086), (38, 473116), (56, 321043), (61, 294728), (76, 236558), (122, 147364), (133, 135176), (152, 118279), (244, 73682), (266, 67588), (277, 64904), (427, 42104), (488, 36841), (532, 33794), (554, 32452), (854, 21052), (1064, 16897), (1108, 16226), (1159, 15512), (1708, 10526), (1939, 9272), (2216, 8113), (2318, 7756), (3416, 5263), (3878, 4636)]