18989068

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 42230160

約数和(自身を除く): 23241092

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 41, 49, 68, 82, 98, 119, 139, 164, 196, 238, 278, 287, 476, 556, 574, 697, 833, 973, 1148, 1394, 1666, 1946, 2009, 2363, 2788, 3332, 3892, 4018, 4726, 4879, 5699, 6811, 8036, 9452, 9758, 11398, 13622, 16541, 19516, 22796, 27244, 33082, 34153, 39893, 66164, 68306, 79786, 96883, 115787, 136612, 159572, 193766, 231574, 279251, 387532, 463148, 558502, 678181, 1117004, 1356362, 2712724, 4747267, 9494534, 18989068]

約数ペア:

[(1, 18989068), (2, 9494534), (4, 4747267), (7, 2712724), (14, 1356362), (17, 1117004), (28, 678181), (34, 558502), (41, 463148), (49, 387532), (68, 279251), (82, 231574), (98, 193766), (119, 159572), (139, 136612), (164, 115787), (196, 96883), (238, 79786), (278, 68306), (287, 66164), (476, 39893), (556, 34153), (574, 33082), (697, 27244), (833, 22796), (973, 19516), (1148, 16541), (1394, 13622), (1666, 11398), (1946, 9758), (2009, 9452), (2363, 8036), (2788, 6811), (3332, 5699), (3892, 4879), (4018, 4726)]