20900242

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:147

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18290798

約数列:

[1, 2, 11, 17, 22, 29, 34, 41, 47, 58, 82, 94, 187, 319, 374, 451, 493, 517, 638, 697, 799, 902, 986, 1034, 1189, 1363, 1394, 1598, 1927, 2378, 2726, 3854, 5423, 7667, 8789, 10846, 13079, 14993, 15334, 17578, 20213, 21197, 23171, 26158, 29986, 32759, 40426, 42394, 46342, 55883, 65518, 111766, 222343, 254881, 360349, 444686, 509762, 614713, 720698, 950011, 1229426, 1900022, 10450121, 20900242]

約数ペア:

[(1, 20900242), (2, 10450121), (11, 1900022), (17, 1229426), (22, 950011), (29, 720698), (34, 614713), (41, 509762), (47, 444686), (58, 360349), (82, 254881), (94, 222343), (187, 111766), (319, 65518), (374, 55883), (451, 46342), (493, 42394), (517, 40426), (638, 32759), (697, 29986), (799, 26158), (902, 23171), (986, 21197), (1034, 20213), (1189, 17578), (1363, 15334), (1394, 14993), (1598, 13079), (1927, 10846), (2378, 8789), (2726, 7667), (3854, 5423)]