129281280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:412

約数の個数: 144

約数和(自身を含む): 417662784

約数和(自身を除く): 288381504

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 131, 160, 192, 240, 256, 257, 262, 320, 384, 393, 480, 514, 524, 640, 655, 768, 771, 786, 960, 1028, 1048, 1280, 1285, 1310, 1542, 1572, 1920, 1965, 2056, 2096, 2570, 2620, 3084, 3144, 3840, 3855, 3930, 4112, 4192, 5140, 5240, 6168, 6288, 7710, 7860, 8224, 8384, 10280, 10480, 12336, 12576, 15420, 15720, 16448, 16768, 20560, 20960, 24672, 25152, 30840, 31440, 32896, 33536, 33667, 41120, 41920, 49344, 50304, 61680, 62880, 65792, 67334, 82240, 83840, 98688, 100608, 101001, 123360, 125760, 134668, 164480, 167680, 168335, 197376, 202002, 246720, 251520, 269336, 328960, 336670, 404004, 493440, 503040, 505005, 538672, 673340, 808008, 986880, 1010010, 1077344, 1346680, 1616016, 2020020, 2154688, 2693360, 3232032, 4040040, 4309376, 5386720, 6464064, 8080080, 8618752, 10773440, 12928128, 16160160, 21546880, 25856256, 32320320, 43093760, 64640640, 129281280]

約数ペア:

[(1, 129281280), (2, 64640640), (3, 43093760), (4, 32320320), (5, 25856256), (6, 21546880), (8, 16160160), (10, 12928128), (12, 10773440), (15, 8618752), (16, 8080080), (20, 6464064), (24, 5386720), (30, 4309376), (32, 4040040), (40, 3232032), (48, 2693360), (60, 2154688), (64, 2020020), (80, 1616016), (96, 1346680), (120, 1077344), (128, 1010010), (131, 986880), (160, 808008), (192, 673340), (240, 538672), (256, 505005), (257, 503040), (262, 493440), (320, 404004), (384, 336670), (393, 328960), (480, 269336), (514, 251520), (524, 246720), (640, 202002), (655, 197376), (768, 168335), (771, 167680), (786, 164480), (960, 134668), (1028, 125760), (1048, 123360), (1280, 101001), (1285, 100608), (1310, 98688), (1542, 83840), (1572, 82240), (1920, 67334), (1965, 65792), (2056, 62880), (2096, 61680), (2570, 50304), (2620, 49344), (3084, 41920), (3144, 41120), (3840, 33667), (3855, 33536), (3930, 32896), (4112, 31440), (4192, 30840), (5140, 25152), (5240, 24672), (6168, 20960), (6288, 20560), (7710, 16768), (7860, 16448), (8224, 15720), (8384, 15420), (10280, 12576), (10480, 12336)]