388637440

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:394

約数の個数: 144

約数和(自身を含む): 997210368

約数和(自身を除く): 608572928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 43, 46, 64, 80, 86, 92, 115, 128, 160, 172, 184, 215, 230, 256, 307, 320, 344, 368, 430, 460, 614, 640, 688, 736, 860, 920, 989, 1228, 1280, 1376, 1472, 1535, 1720, 1840, 1978, 2456, 2752, 2944, 3070, 3440, 3680, 3956, 4912, 4945, 5504, 5888, 6140, 6880, 7061, 7360, 7912, 9824, 9890, 11008, 12280, 13201, 13760, 14122, 14720, 15824, 19648, 19780, 24560, 26402, 27520, 28244, 29440, 31648, 35305, 39296, 39560, 49120, 52804, 55040, 56488, 63296, 66005, 70610, 78592, 79120, 98240, 105608, 112976, 126592, 132010, 141220, 158240, 196480, 211216, 225952, 253184, 264020, 282440, 303623, 316480, 392960, 422432, 451904, 528040, 564880, 607246, 632960, 844864, 903808, 1056080, 1129760, 1214492, 1265920, 1518115, 1689728, 1807616, 2112160, 2259520, 2428984, 3036230, 3379456, 4224320, 4519040, 4857968, 6072460, 8448640, 9038080, 9715936, 12144920, 16897280, 19431872, 24289840, 38863744, 48579680, 77727488, 97159360, 194318720, 388637440]

約数ペア:

[(1, 388637440), (2, 194318720), (4, 97159360), (5, 77727488), (8, 48579680), (10, 38863744), (16, 24289840), (20, 19431872), (23, 16897280), (32, 12144920), (40, 9715936), (43, 9038080), (46, 8448640), (64, 6072460), (80, 4857968), (86, 4519040), (92, 4224320), (115, 3379456), (128, 3036230), (160, 2428984), (172, 2259520), (184, 2112160), (215, 1807616), (230, 1689728), (256, 1518115), (307, 1265920), (320, 1214492), (344, 1129760), (368, 1056080), (430, 903808), (460, 844864), (614, 632960), (640, 607246), (688, 564880), (736, 528040), (860, 451904), (920, 422432), (989, 392960), (1228, 316480), (1280, 303623), (1376, 282440), (1472, 264020), (1535, 253184), (1720, 225952), (1840, 211216), (1978, 196480), (2456, 158240), (2752, 141220), (2944, 132010), (3070, 126592), (3440, 112976), (3680, 105608), (3956, 98240), (4912, 79120), (4945, 78592), (5504, 70610), (5888, 66005), (6140, 63296), (6880, 56488), (7061, 55040), (7360, 52804), (7912, 49120), (9824, 39560), (9890, 39296), (11008, 35305), (12280, 31648), (13201, 29440), (13760, 28244), (14122, 27520), (14720, 26402), (15824, 24560), (19648, 19780)]