21417776

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1489}}^1$

素因数の和:1557

約数の個数: 40

約数和(自身を含む): 44342400

約数和(自身を除く): 22924624

約数列:

[1, 2, 4, 8, 16, 29, 31, 58, 62, 116, 124, 232, 248, 464, 496, 899, 1489, 1798, 2978, 3596, 5956, 7192, 11912, 14384, 23824, 43181, 46159, 86362, 92318, 172724, 184636, 345448, 369272, 690896, 738544, 1338611, 2677222, 5354444, 10708888, 21417776]

約数ペア:

[(1, 21417776), (2, 10708888), (4, 5354444), (8, 2677222), (16, 1338611), (29, 738544), (31, 690896), (58, 369272), (62, 345448), (116, 184636), (124, 172724), (232, 92318), (248, 86362), (464, 46159), (496, 43181), (899, 23824), (1489, 14384), (1798, 11912), (2978, 7192), (3596, 5956)]