398950160

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 200

約数和(自身を含む): 1133665536

約数和(自身を除く): 734715376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 67, 70, 80, 98, 112, 124, 134, 140, 155, 196, 217, 245, 248, 268, 280, 310, 335, 343, 392, 434, 469, 490, 496, 536, 560, 620, 670, 686, 784, 868, 938, 980, 1072, 1085, 1240, 1340, 1372, 1519, 1715, 1736, 1876, 1960, 2077, 2170, 2345, 2401, 2480, 2680, 2744, 3038, 3283, 3430, 3472, 3752, 3920, 4154, 4340, 4690, 4802, 5360, 5488, 6076, 6566, 6860, 7504, 7595, 8308, 8680, 9380, 9604, 10385, 10633, 12005, 12152, 13132, 13720, 14539, 15190, 16415, 16616, 17360, 18760, 19208, 20770, 21266, 22981, 24010, 24304, 26264, 27440, 29078, 30380, 32830, 33232, 37520, 38416, 41540, 42532, 45962, 48020, 52528, 53165, 58156, 60760, 65660, 72695, 74431, 83080, 85064, 91924, 96040, 101773, 106330, 114905, 116312, 121520, 131320, 145390, 148862, 160867, 166160, 170128, 183848, 192080, 203546, 212660, 229810, 232624, 262640, 290780, 297724, 321734, 367696, 372155, 407092, 425320, 459620, 508865, 581560, 595448, 643468, 712411, 744310, 804335, 814184, 850640, 919240, 1017730, 1163120, 1190896, 1286936, 1424822, 1488620, 1608670, 1628368, 1838480, 2035460, 2573872, 2849644, 2977240, 3217340, 3562055, 4070920, 4986877, 5699288, 5954480, 6434680, 7124110, 8141840, 9973754, 11398576, 12869360, 14248220, 19947508, 24934385, 28496440, 39895016, 49868770, 56992880, 79790032, 99737540, 199475080, 398950160]

約数ペア:

[(1, 398950160), (2, 199475080), (4, 99737540), (5, 79790032), (7, 56992880), (8, 49868770), (10, 39895016), (14, 28496440), (16, 24934385), (20, 19947508), (28, 14248220), (31, 12869360), (35, 11398576), (40, 9973754), (49, 8141840), (56, 7124110), (62, 6434680), (67, 5954480), (70, 5699288), (80, 4986877), (98, 4070920), (112, 3562055), (124, 3217340), (134, 2977240), (140, 2849644), (155, 2573872), (196, 2035460), (217, 1838480), (245, 1628368), (248, 1608670), (268, 1488620), (280, 1424822), (310, 1286936), (335, 1190896), (343, 1163120), (392, 1017730), (434, 919240), (469, 850640), (490, 814184), (496, 804335), (536, 744310), (560, 712411), (620, 643468), (670, 595448), (686, 581560), (784, 508865), (868, 459620), (938, 425320), (980, 407092), (1072, 372155), (1085, 367696), (1240, 321734), (1340, 297724), (1372, 290780), (1519, 262640), (1715, 232624), (1736, 229810), (1876, 212660), (1960, 203546), (2077, 192080), (2170, 183848), (2345, 170128), (2401, 166160), (2480, 160867), (2680, 148862), (2744, 145390), (3038, 131320), (3283, 121520), (3430, 116312), (3472, 114905), (3752, 106330), (3920, 101773), (4154, 96040), (4340, 91924), (4690, 85064), (4802, 83080), (5360, 74431), (5488, 72695), (6076, 65660), (6566, 60760), (6860, 58156), (7504, 53165), (7595, 52528), (8308, 48020), (8680, 45962), (9380, 42532), (9604, 41540), (10385, 38416), (10633, 37520), (12005, 33232), (12152, 32830), (13132, 30380), (13720, 29078), (14539, 27440), (15190, 26264), (16415, 24304), (16616, 24010), (17360, 22981), (18760, 21266), (19208, 20770)]