18522980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 46453176

約数和(自身を除く): 27930196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 461, 490, 574, 820, 922, 980, 1148, 1435, 1844, 2009, 2305, 2870, 3227, 4018, 4610, 5740, 6454, 8036, 9220, 10045, 12908, 16135, 18901, 20090, 22589, 32270, 37802, 40180, 45178, 64540, 75604, 90356, 94505, 112945, 132307, 189010, 225890, 264614, 378020, 451780, 529228, 661535, 926149, 1323070, 1852298, 2646140, 3704596, 4630745, 9261490, 18522980]

約数ペア:

[(1, 18522980), (2, 9261490), (4, 4630745), (5, 3704596), (7, 2646140), (10, 1852298), (14, 1323070), (20, 926149), (28, 661535), (35, 529228), (41, 451780), (49, 378020), (70, 264614), (82, 225890), (98, 189010), (140, 132307), (164, 112945), (196, 94505), (205, 90356), (245, 75604), (287, 64540), (410, 45178), (461, 40180), (490, 37802), (574, 32270), (820, 22589), (922, 20090), (980, 18901), (1148, 16135), (1435, 12908), (1844, 10045), (2009, 9220), (2305, 8036), (2870, 6454), (3227, 5740), (4018, 4610)]