21223076

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 25699324

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 41, 49, 76, 82, 98, 133, 139, 164, 196, 266, 278, 287, 532, 556, 574, 779, 931, 973, 1148, 1558, 1862, 1946, 2009, 2641, 3116, 3724, 3892, 4018, 5282, 5453, 5699, 6811, 8036, 10564, 10906, 11398, 13622, 18487, 21812, 22796, 27244, 36974, 38171, 39893, 73948, 76342, 79786, 108281, 129409, 152684, 159572, 216562, 258818, 279251, 433124, 517636, 558502, 757967, 1117004, 1515934, 3031868, 5305769, 10611538, 21223076]

約数ペア:

[(1, 21223076), (2, 10611538), (4, 5305769), (7, 3031868), (14, 1515934), (19, 1117004), (28, 757967), (38, 558502), (41, 517636), (49, 433124), (76, 279251), (82, 258818), (98, 216562), (133, 159572), (139, 152684), (164, 129409), (196, 108281), (266, 79786), (278, 76342), (287, 73948), (532, 39893), (556, 38171), (574, 36974), (779, 27244), (931, 22796), (973, 21812), (1148, 18487), (1558, 13622), (1862, 11398), (1946, 10906), (2009, 10564), (2641, 8036), (3116, 6811), (3724, 5699), (3892, 5453), (4018, 5282)]