19915668

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 52468416

約数和(自身を除く): 32552748

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 82, 103, 123, 131, 164, 206, 246, 262, 309, 369, 393, 412, 492, 524, 618, 738, 786, 927, 1179, 1236, 1476, 1572, 1854, 2358, 3708, 4223, 4716, 5371, 8446, 10742, 12669, 13493, 16113, 16892, 21484, 25338, 26986, 32226, 38007, 40479, 48339, 50676, 53972, 64452, 76014, 80958, 96678, 121437, 152028, 161916, 193356, 242874, 485748, 553213, 1106426, 1659639, 2212852, 3319278, 4978917, 6638556, 9957834, 19915668]

約数ペア:

[(1, 19915668), (2, 9957834), (3, 6638556), (4, 4978917), (6, 3319278), (9, 2212852), (12, 1659639), (18, 1106426), (36, 553213), (41, 485748), (82, 242874), (103, 193356), (123, 161916), (131, 152028), (164, 121437), (206, 96678), (246, 80958), (262, 76014), (309, 64452), (369, 53972), (393, 50676), (412, 48339), (492, 40479), (524, 38007), (618, 32226), (738, 26986), (786, 25338), (927, 21484), (1179, 16892), (1236, 16113), (1476, 13493), (1572, 12669), (1854, 10742), (2358, 8446), (3708, 5371), (4223, 4716)]