81971297980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{322037}}^1$

素因数の和:322159

約数の個数: 96

約数和(自身を含む): 204507011520

約数和(自身を除く): 122535713540

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 89, 110, 130, 143, 178, 220, 260, 286, 356, 445, 572, 715, 890, 979, 1157, 1430, 1780, 1958, 2314, 2860, 3916, 4628, 4895, 5785, 9790, 11570, 12727, 19580, 23140, 25454, 50908, 63635, 127270, 254540, 322037, 644074, 1288148, 1610185, 3220370, 3542407, 4186481, 6440740, 7084814, 8372962, 14169628, 16745924, 17712035, 20932405, 28661293, 35424070, 41864810, 46051291, 57322586, 70848140, 83729620, 92102582, 114645172, 143306465, 184205164, 230256455, 286612930, 315274223, 372596809, 460512910, 573225860, 630548446, 745193618, 921025820, 1261096892, 1490387236, 1576371115, 1862984045, 3152742230, 3725968090, 4098564899, 6305484460, 7451936180, 8197129798, 16394259596, 20492824495, 40985648990, 81971297980]

約数ペア:

[(1, 81971297980), (2, 40985648990), (4, 20492824495), (5, 16394259596), (10, 8197129798), (11, 7451936180), (13, 6305484460), (20, 4098564899), (22, 3725968090), (26, 3152742230), (44, 1862984045), (52, 1576371115), (55, 1490387236), (65, 1261096892), (89, 921025820), (110, 745193618), (130, 630548446), (143, 573225860), (178, 460512910), (220, 372596809), (260, 315274223), (286, 286612930), (356, 230256455), (445, 184205164), (572, 143306465), (715, 114645172), (890, 92102582), (979, 83729620), (1157, 70848140), (1430, 57322586), (1780, 46051291), (1958, 41864810), (2314, 35424070), (2860, 28661293), (3916, 20932405), (4628, 17712035), (4895, 16745924), (5785, 14169628), (9790, 8372962), (11570, 7084814), (12727, 6440740), (19580, 4186481), (23140, 3542407), (25454, 3220370), (50908, 1610185), (63635, 1288148), (127270, 644074), (254540, 322037)]