21178084

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 19948316

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 89, 101, 124, 178, 202, 356, 404, 589, 1178, 1691, 1919, 2356, 2759, 3131, 3382, 3838, 5518, 6262, 6764, 7676, 8989, 11036, 12524, 17978, 35956, 52421, 59489, 104842, 118978, 170791, 209684, 237956, 278659, 341582, 557318, 683164, 1114636, 5294521, 10589042, 21178084]

約数ペア:

[(1, 21178084), (2, 10589042), (4, 5294521), (19, 1114636), (31, 683164), (38, 557318), (62, 341582), (76, 278659), (89, 237956), (101, 209684), (124, 170791), (178, 118978), (202, 104842), (356, 59489), (404, 52421), (589, 35956), (1178, 17978), (1691, 12524), (1919, 11036), (2356, 8989), (2759, 7676), (3131, 6764), (3382, 6262), (3838, 5518)]