248551520

素因数分解:

$2^5\times 5^1\times 7^4\times {\mathrm{647}}^1$

素因数の和:690

約数の個数: 120

約数和(自身を含む): 686088144

約数和(自身を除く): 437536624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 343, 392, 490, 560, 647, 686, 784, 980, 1120, 1294, 1372, 1568, 1715, 1960, 2401, 2588, 2744, 3235, 3430, 3920, 4529, 4802, 5176, 5488, 6470, 6860, 7840, 9058, 9604, 10352, 10976, 12005, 12940, 13720, 18116, 19208, 20704, 22645, 24010, 25880, 27440, 31703, 36232, 38416, 45290, 48020, 51760, 54880, 63406, 72464, 76832, 90580, 96040, 103520, 126812, 144928, 158515, 181160, 192080, 221921, 253624, 317030, 362320, 384160, 443842, 507248, 634060, 724640, 887684, 1014496, 1109605, 1268120, 1553447, 1775368, 2219210, 2536240, 3106894, 3550736, 4438420, 5072480, 6213788, 7101472, 7767235, 8876840, 12427576, 15534470, 17753680, 24855152, 31068940, 35507360, 49710304, 62137880, 124275760, 248551520]

約数ペア:

[(1, 248551520), (2, 124275760), (4, 62137880), (5, 49710304), (7, 35507360), (8, 31068940), (10, 24855152), (14, 17753680), (16, 15534470), (20, 12427576), (28, 8876840), (32, 7767235), (35, 7101472), (40, 6213788), (49, 5072480), (56, 4438420), (70, 3550736), (80, 3106894), (98, 2536240), (112, 2219210), (140, 1775368), (160, 1553447), (196, 1268120), (224, 1109605), (245, 1014496), (280, 887684), (343, 724640), (392, 634060), (490, 507248), (560, 443842), (647, 384160), (686, 362320), (784, 317030), (980, 253624), (1120, 221921), (1294, 192080), (1372, 181160), (1568, 158515), (1715, 144928), (1960, 126812), (2401, 103520), (2588, 96040), (2744, 90580), (3235, 76832), (3430, 72464), (3920, 63406), (4529, 54880), (4802, 51760), (5176, 48020), (5488, 45290), (6470, 38416), (6860, 36232), (7840, 31703), (9058, 27440), (9604, 25880), (10352, 24010), (10976, 22645), (12005, 20704), (12940, 19208), (13720, 18116)]