20805950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:234

約数の個数: 72

約数和(自身を含む): 45023160

約数和(自身を除く): 24217210

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 121, 181, 190, 209, 242, 275, 362, 418, 475, 550, 605, 905, 950, 1045, 1210, 1810, 1991, 2090, 2299, 3025, 3439, 3982, 4525, 4598, 5225, 6050, 6878, 9050, 9955, 10450, 11495, 17195, 19910, 21901, 22990, 34390, 37829, 43802, 49775, 57475, 75658, 85975, 99550, 109505, 114950, 171950, 189145, 219010, 378290, 416119, 547525, 832238, 945725, 1095050, 1891450, 2080595, 4161190, 10402975, 20805950]

約数ペア:

[(1, 20805950), (2, 10402975), (5, 4161190), (10, 2080595), (11, 1891450), (19, 1095050), (22, 945725), (25, 832238), (38, 547525), (50, 416119), (55, 378290), (95, 219010), (110, 189145), (121, 171950), (181, 114950), (190, 109505), (209, 99550), (242, 85975), (275, 75658), (362, 57475), (418, 49775), (475, 43802), (550, 37829), (605, 34390), (905, 22990), (950, 21901), (1045, 19910), (1210, 17195), (1810, 11495), (1991, 10450), (2090, 9955), (2299, 9050), (3025, 6878), (3439, 6050), (3982, 5225), (4525, 4598)]