638741680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{2069}}^1$

素因数の和:2326

約数の個数: 80

約数和(自身を含む): 1580122080

約数和(自身を除く): 941380400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 227, 272, 340, 454, 680, 908, 1135, 1360, 1816, 2069, 2270, 3632, 3859, 4138, 4540, 7718, 8276, 9080, 10345, 15436, 16552, 18160, 19295, 20690, 30872, 33104, 35173, 38590, 41380, 61744, 70346, 77180, 82760, 140692, 154360, 165520, 175865, 281384, 308720, 351730, 469663, 562768, 703460, 939326, 1406920, 1878652, 2348315, 2813840, 3757304, 4696630, 7514608, 7984271, 9393260, 15968542, 18786520, 31937084, 37573040, 39921355, 63874168, 79842710, 127748336, 159685420, 319370840, 638741680]

約数ペア:

[(1, 638741680), (2, 319370840), (4, 159685420), (5, 127748336), (8, 79842710), (10, 63874168), (16, 39921355), (17, 37573040), (20, 31937084), (34, 18786520), (40, 15968542), (68, 9393260), (80, 7984271), (85, 7514608), (136, 4696630), (170, 3757304), (227, 2813840), (272, 2348315), (340, 1878652), (454, 1406920), (680, 939326), (908, 703460), (1135, 562768), (1360, 469663), (1816, 351730), (2069, 308720), (2270, 281384), (3632, 175865), (3859, 165520), (4138, 154360), (4540, 140692), (7718, 82760), (8276, 77180), (9080, 70346), (10345, 61744), (15436, 41380), (16552, 38590), (18160, 35173), (19295, 33104), (20690, 30872)]