80407040

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 120

約数和(自身を含む): 224613972

約数和(自身を除く): 144206932

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 641, 784, 896, 980, 1120, 1280, 1282, 1568, 1792, 1960, 2240, 2560, 2564, 3136, 3205, 3584, 3920, 4480, 4487, 5128, 6272, 6410, 7840, 8960, 8974, 10256, 12544, 12820, 15680, 17920, 17948, 20512, 22435, 25088, 25640, 31360, 31409, 35896, 41024, 44870, 51280, 62720, 62818, 71792, 82048, 89740, 102560, 125440, 125636, 143584, 157045, 164096, 179480, 205120, 251272, 287168, 314090, 328192, 358960, 410240, 502544, 574336, 628180, 717920, 820480, 1005088, 1148672, 1256360, 1435840, 1640960, 2010176, 2297344, 2512720, 2871680, 4020352, 5025440, 5743360, 8040704, 10050880, 11486720, 16081408, 20101760, 40203520, 80407040]

約数ペア:

[(1, 80407040), (2, 40203520), (4, 20101760), (5, 16081408), (7, 11486720), (8, 10050880), (10, 8040704), (14, 5743360), (16, 5025440), (20, 4020352), (28, 2871680), (32, 2512720), (35, 2297344), (40, 2010176), (49, 1640960), (56, 1435840), (64, 1256360), (70, 1148672), (80, 1005088), (98, 820480), (112, 717920), (128, 628180), (140, 574336), (160, 502544), (196, 410240), (224, 358960), (245, 328192), (256, 314090), (280, 287168), (320, 251272), (392, 205120), (448, 179480), (490, 164096), (512, 157045), (560, 143584), (640, 125636), (641, 125440), (784, 102560), (896, 89740), (980, 82048), (1120, 71792), (1280, 62818), (1282, 62720), (1568, 51280), (1792, 44870), (1960, 41024), (2240, 35896), (2560, 31409), (2564, 31360), (3136, 25640), (3205, 25088), (3584, 22435), (3920, 20512), (4480, 17948), (4487, 17920), (5128, 15680), (6272, 12820), (6410, 12544), (7840, 10256), (8960, 8974)]