20085975

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:151

約数の個数: 120

約数和(自身を含む): 46212320

約数和(自身を除く): 26126345

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 27, 35, 39, 45, 63, 65, 75, 81, 91, 105, 109, 117, 135, 175, 189, 195, 225, 273, 315, 325, 327, 351, 405, 455, 525, 545, 567, 585, 675, 763, 819, 945, 975, 981, 1053, 1365, 1417, 1575, 1635, 1755, 2025, 2275, 2289, 2457, 2725, 2835, 2925, 2943, 3815, 4095, 4251, 4725, 4905, 5265, 6825, 6867, 7085, 7371, 8175, 8775, 8829, 9919, 11445, 12285, 12753, 14175, 14715, 19075, 20475, 20601, 21255, 24525, 26325, 29757, 34335, 35425, 36855, 38259, 44145, 49595, 57225, 61425, 61803, 63765, 73575, 89271, 103005, 106275, 114777, 148785, 171675, 184275, 191295, 220725, 247975, 267813, 309015, 318825, 446355, 515025, 573885, 743925, 803439, 956475, 1339065, 1545075, 2231775, 2869425, 4017195, 6695325, 20085975]

約数ペア:

[(1, 20085975), (3, 6695325), (5, 4017195), (7, 2869425), (9, 2231775), (13, 1545075), (15, 1339065), (21, 956475), (25, 803439), (27, 743925), (35, 573885), (39, 515025), (45, 446355), (63, 318825), (65, 309015), (75, 267813), (81, 247975), (91, 220725), (105, 191295), (109, 184275), (117, 171675), (135, 148785), (175, 114777), (189, 106275), (195, 103005), (225, 89271), (273, 73575), (315, 63765), (325, 61803), (327, 61425), (351, 57225), (405, 49595), (455, 44145), (525, 38259), (545, 36855), (567, 35425), (585, 34335), (675, 29757), (763, 26325), (819, 24525), (945, 21255), (975, 20601), (981, 20475), (1053, 19075), (1365, 14715), (1417, 14175), (1575, 12753), (1635, 12285), (1755, 11445), (2025, 9919), (2275, 8829), (2289, 8775), (2457, 8175), (2725, 7371), (2835, 7085), (2925, 6867), (2943, 6825), (3815, 5265), (4095, 4905), (4251, 4725)]