320485480

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 160

約数和(自身を含む): 871223040

約数和(自身を除く): 550737560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 49, 56, 70, 71, 94, 98, 140, 142, 188, 196, 235, 245, 280, 284, 329, 343, 355, 376, 392, 470, 490, 497, 568, 658, 686, 710, 940, 980, 994, 1316, 1372, 1420, 1645, 1715, 1880, 1960, 1988, 2303, 2401, 2485, 2632, 2744, 2840, 3290, 3337, 3430, 3479, 3976, 4606, 4802, 4970, 6580, 6674, 6860, 6958, 9212, 9604, 9940, 11515, 12005, 13160, 13348, 13720, 13916, 16121, 16685, 17395, 18424, 19208, 19880, 23030, 23359, 24010, 24353, 26696, 27832, 32242, 33370, 34790, 46060, 46718, 48020, 48706, 64484, 66740, 69580, 80605, 92120, 93436, 96040, 97412, 112847, 116795, 121765, 128968, 133480, 139160, 161210, 163513, 170471, 186872, 194824, 225694, 233590, 243530, 322420, 327026, 340942, 451388, 467180, 487060, 564235, 644840, 654052, 681884, 817565, 852355, 902776, 934360, 974120, 1128470, 1144591, 1308104, 1363768, 1635130, 1704710, 2256940, 2289182, 3270260, 3409420, 4513880, 4578364, 5722955, 6540520, 6818840, 8012137, 9156728, 11445910, 16024274, 22891820, 32048548, 40060685, 45783640, 64097096, 80121370, 160242740, 320485480]

約数ペア:

[(1, 320485480), (2, 160242740), (4, 80121370), (5, 64097096), (7, 45783640), (8, 40060685), (10, 32048548), (14, 22891820), (20, 16024274), (28, 11445910), (35, 9156728), (40, 8012137), (47, 6818840), (49, 6540520), (56, 5722955), (70, 4578364), (71, 4513880), (94, 3409420), (98, 3270260), (140, 2289182), (142, 2256940), (188, 1704710), (196, 1635130), (235, 1363768), (245, 1308104), (280, 1144591), (284, 1128470), (329, 974120), (343, 934360), (355, 902776), (376, 852355), (392, 817565), (470, 681884), (490, 654052), (497, 644840), (568, 564235), (658, 487060), (686, 467180), (710, 451388), (940, 340942), (980, 327026), (994, 322420), (1316, 243530), (1372, 233590), (1420, 225694), (1645, 194824), (1715, 186872), (1880, 170471), (1960, 163513), (1988, 161210), (2303, 139160), (2401, 133480), (2485, 128968), (2632, 121765), (2744, 116795), (2840, 112847), (3290, 97412), (3337, 96040), (3430, 93436), (3479, 92120), (3976, 80605), (4606, 69580), (4802, 66740), (4970, 64484), (6580, 48706), (6674, 48020), (6860, 46718), (6958, 46060), (9212, 34790), (9604, 33370), (9940, 32242), (11515, 27832), (12005, 26696), (13160, 24353), (13348, 24010), (13720, 23359), (13916, 23030), (16121, 19880), (16685, 19208), (17395, 18424)]