21180285

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 44977152

約数和(自身を除く): 23796867

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 81, 93, 105, 135, 155, 189, 217, 241, 279, 315, 405, 465, 567, 651, 723, 837, 945, 1085, 1205, 1395, 1687, 1953, 2169, 2511, 2835, 3255, 3615, 4185, 5061, 5859, 6507, 7471, 8435, 9765, 10845, 12555, 15183, 17577, 19521, 22413, 25305, 29295, 32535, 37355, 45549, 52297, 67239, 75915, 87885, 97605, 112065, 136647, 156891, 201717, 227745, 261485, 336195, 470673, 605151, 683235, 784455, 1008585, 1412019, 2353365, 3025755, 4236057, 7060095, 21180285]

約数ペア:

[(1, 21180285), (3, 7060095), (5, 4236057), (7, 3025755), (9, 2353365), (15, 1412019), (21, 1008585), (27, 784455), (31, 683235), (35, 605151), (45, 470673), (63, 336195), (81, 261485), (93, 227745), (105, 201717), (135, 156891), (155, 136647), (189, 112065), (217, 97605), (241, 87885), (279, 75915), (315, 67239), (405, 52297), (465, 45549), (567, 37355), (651, 32535), (723, 29295), (837, 25305), (945, 22413), (1085, 19521), (1205, 17577), (1395, 15183), (1687, 12555), (1953, 10845), (2169, 9765), (2511, 8435), (2835, 7471), (3255, 6507), (3615, 5859), (4185, 5061)]