686365420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:192

約数の個数: 144

約数和(自身を含む): 1667572704

約数和(自身を除く): 981207284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 41, 52, 62, 65, 67, 82, 124, 130, 134, 155, 164, 205, 260, 268, 310, 335, 403, 410, 533, 620, 670, 806, 820, 871, 961, 1066, 1271, 1340, 1612, 1742, 1922, 2015, 2077, 2132, 2542, 2665, 2747, 3484, 3844, 4030, 4154, 4355, 4805, 5084, 5330, 5494, 6355, 8060, 8308, 8710, 9610, 10385, 10660, 10988, 12493, 12710, 13735, 16523, 17420, 19220, 20770, 24986, 25420, 27001, 27470, 33046, 35711, 39401, 41540, 49972, 54002, 54940, 62465, 64387, 66092, 71422, 78802, 82615, 85157, 108004, 124930, 128774, 135005, 142844, 157604, 165230, 170314, 178555, 197005, 249860, 257548, 270010, 321935, 330460, 340628, 357110, 394010, 425785, 512213, 540020, 643870, 714220, 788020, 837031, 851570, 1024426, 1107041, 1287740, 1674062, 1703140, 2048852, 2214082, 2561065, 2639867, 3348124, 4185155, 4428164, 5122130, 5279734, 5535205, 8370310, 10244260, 10559468, 11070410, 13199335, 16740620, 22140820, 26398670, 34318271, 52797340, 68636542, 137273084, 171591355, 343182710, 686365420]

約数ペア:

[(1, 686365420), (2, 343182710), (4, 171591355), (5, 137273084), (10, 68636542), (13, 52797340), (20, 34318271), (26, 26398670), (31, 22140820), (41, 16740620), (52, 13199335), (62, 11070410), (65, 10559468), (67, 10244260), (82, 8370310), (124, 5535205), (130, 5279734), (134, 5122130), (155, 4428164), (164, 4185155), (205, 3348124), (260, 2639867), (268, 2561065), (310, 2214082), (335, 2048852), (403, 1703140), (410, 1674062), (533, 1287740), (620, 1107041), (670, 1024426), (806, 851570), (820, 837031), (871, 788020), (961, 714220), (1066, 643870), (1271, 540020), (1340, 512213), (1612, 425785), (1742, 394010), (1922, 357110), (2015, 340628), (2077, 330460), (2132, 321935), (2542, 270010), (2665, 257548), (2747, 249860), (3484, 197005), (3844, 178555), (4030, 170314), (4154, 165230), (4355, 157604), (4805, 142844), (5084, 135005), (5330, 128774), (5494, 124930), (6355, 108004), (8060, 85157), (8308, 82615), (8710, 78802), (9610, 71422), (10385, 66092), (10660, 64387), (10988, 62465), (12493, 54940), (12710, 54002), (13735, 49972), (16523, 41540), (17420, 39401), (19220, 35711), (20770, 33046), (24986, 27470), (25420, 27001)]