397440

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{23}}^1$

素因数の和:51

約数の個数: 128

約数和(自身を含む): 1468800

約数和(自身を除く): 1071360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 72, 80, 90, 92, 96, 108, 115, 120, 128, 135, 138, 144, 160, 180, 184, 192, 207, 216, 230, 240, 270, 276, 288, 320, 345, 360, 368, 384, 414, 432, 460, 480, 540, 552, 576, 621, 640, 690, 720, 736, 828, 864, 920, 960, 1035, 1080, 1104, 1152, 1242, 1380, 1440, 1472, 1656, 1728, 1840, 1920, 2070, 2160, 2208, 2484, 2760, 2880, 2944, 3105, 3312, 3456, 3680, 4140, 4320, 4416, 4968, 5520, 5760, 6210, 6624, 7360, 8280, 8640, 8832, 9936, 11040, 12420, 13248, 14720, 16560, 17280, 19872, 22080, 24840, 26496, 33120, 39744, 44160, 49680, 66240, 79488, 99360, 132480, 198720, 397440]

約数ペア:

[(1, 397440), (2, 198720), (3, 132480), (4, 99360), (5, 79488), (6, 66240), (8, 49680), (9, 44160), (10, 39744), (12, 33120), (15, 26496), (16, 24840), (18, 22080), (20, 19872), (23, 17280), (24, 16560), (27, 14720), (30, 13248), (32, 12420), (36, 11040), (40, 9936), (45, 8832), (46, 8640), (48, 8280), (54, 7360), (60, 6624), (64, 6210), (69, 5760), (72, 5520), (80, 4968), (90, 4416), (92, 4320), (96, 4140), (108, 3680), (115, 3456), (120, 3312), (128, 3105), (135, 2944), (138, 2880), (144, 2760), (160, 2484), (180, 2208), (184, 2160), (192, 2070), (207, 1920), (216, 1840), (230, 1728), (240, 1656), (270, 1472), (276, 1440), (288, 1380), (320, 1242), (345, 1152), (360, 1104), (368, 1080), (384, 1035), (414, 960), (432, 920), (460, 864), (480, 828), (540, 736), (552, 720), (576, 690), (621, 640)]