21775984

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:769

約数の個数: 40

約数和(自身を含む): 44327520

約数和(自身を除く): 22551536

約数列:

[1, 2, 4, 8, 16, 29, 58, 71, 116, 142, 232, 284, 464, 568, 661, 1136, 1322, 2059, 2644, 4118, 5288, 8236, 10576, 16472, 19169, 32944, 38338, 46931, 76676, 93862, 153352, 187724, 306704, 375448, 750896, 1360999, 2721998, 5443996, 10887992, 21775984]

約数ペア:

[(1, 21775984), (2, 10887992), (4, 5443996), (8, 2721998), (16, 1360999), (29, 750896), (58, 375448), (71, 306704), (116, 187724), (142, 153352), (232, 93862), (284, 76676), (464, 46931), (568, 38338), (661, 32944), (1136, 19169), (1322, 16472), (2059, 10576), (2644, 8236), (4118, 5288)]