205528540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{523}}^1$

素因数の和:947

約数の個数: 72

約数和(自身を含む): 504291312

約数和(自身を除く): 298762772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 401, 490, 523, 802, 980, 1046, 1604, 2005, 2092, 2615, 2807, 3661, 4010, 5230, 5614, 7322, 8020, 10460, 11228, 14035, 14644, 18305, 19649, 25627, 28070, 36610, 39298, 51254, 56140, 73220, 78596, 98245, 102508, 128135, 196490, 209723, 256270, 392980, 419446, 512540, 838892, 1048615, 1468061, 2097230, 2936122, 4194460, 5872244, 7340305, 10276427, 14680610, 20552854, 29361220, 41105708, 51382135, 102764270, 205528540]

約数ペア:

[(1, 205528540), (2, 102764270), (4, 51382135), (5, 41105708), (7, 29361220), (10, 20552854), (14, 14680610), (20, 10276427), (28, 7340305), (35, 5872244), (49, 4194460), (70, 2936122), (98, 2097230), (140, 1468061), (196, 1048615), (245, 838892), (401, 512540), (490, 419446), (523, 392980), (802, 256270), (980, 209723), (1046, 196490), (1604, 128135), (2005, 102508), (2092, 98245), (2615, 78596), (2807, 73220), (3661, 56140), (4010, 51254), (5230, 39298), (5614, 36610), (7322, 28070), (8020, 25627), (10460, 19649), (11228, 18305), (14035, 14644)]