20446725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 37067072

約数和(自身を除く): 16620347

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 67, 75, 195, 201, 313, 325, 335, 871, 939, 975, 1005, 1565, 1675, 2613, 4069, 4355, 4695, 5025, 7825, 12207, 13065, 20345, 20971, 21775, 23475, 61035, 62913, 65325, 101725, 104855, 272623, 305175, 314565, 524275, 817869, 1363115, 1572825, 4089345, 6815575, 20446725]

約数ペア:

[(1, 20446725), (3, 6815575), (5, 4089345), (13, 1572825), (15, 1363115), (25, 817869), (39, 524275), (65, 314565), (67, 305175), (75, 272623), (195, 104855), (201, 101725), (313, 65325), (325, 62913), (335, 61035), (871, 23475), (939, 21775), (975, 20971), (1005, 20345), (1565, 13065), (1675, 12207), (2613, 7825), (4069, 5025), (4355, 4695)]