82918780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{401}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 204026256

約数和(自身を除く): 121107476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 211, 245, 401, 422, 490, 802, 844, 980, 1055, 1477, 1604, 2005, 2110, 2807, 2954, 4010, 4220, 5614, 5908, 7385, 8020, 10339, 11228, 14035, 14770, 19649, 20678, 28070, 29540, 39298, 41356, 51695, 56140, 78596, 84611, 98245, 103390, 169222, 196490, 206780, 338444, 392980, 423055, 592277, 846110, 1184554, 1692220, 2369108, 2961385, 4145939, 5922770, 8291878, 11845540, 16583756, 20729695, 41459390, 82918780]

約数ペア:

[(1, 82918780), (2, 41459390), (4, 20729695), (5, 16583756), (7, 11845540), (10, 8291878), (14, 5922770), (20, 4145939), (28, 2961385), (35, 2369108), (49, 1692220), (70, 1184554), (98, 846110), (140, 592277), (196, 423055), (211, 392980), (245, 338444), (401, 206780), (422, 196490), (490, 169222), (802, 103390), (844, 98245), (980, 84611), (1055, 78596), (1477, 56140), (1604, 51695), (2005, 41356), (2110, 39298), (2807, 29540), (2954, 28070), (4010, 20678), (4220, 19649), (5614, 14770), (5908, 14035), (7385, 11228), (8020, 10339)]