155705840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:510

約数の個数: 80

約数和(自身を含む): 372833280

約数和(自身を除く): 217127440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 79, 80, 142, 158, 284, 316, 347, 355, 395, 568, 632, 694, 710, 790, 1136, 1264, 1388, 1420, 1580, 1735, 2776, 2840, 3160, 3470, 5552, 5609, 5680, 6320, 6940, 11218, 13880, 22436, 24637, 27413, 27760, 28045, 44872, 49274, 54826, 56090, 89744, 98548, 109652, 112180, 123185, 137065, 197096, 219304, 224360, 246370, 274130, 394192, 438608, 448720, 492740, 548260, 985480, 1096520, 1946323, 1970960, 2193040, 3892646, 7785292, 9731615, 15570584, 19463230, 31141168, 38926460, 77852920, 155705840]

約数ペア:

[(1, 155705840), (2, 77852920), (4, 38926460), (5, 31141168), (8, 19463230), (10, 15570584), (16, 9731615), (20, 7785292), (40, 3892646), (71, 2193040), (79, 1970960), (80, 1946323), (142, 1096520), (158, 985480), (284, 548260), (316, 492740), (347, 448720), (355, 438608), (395, 394192), (568, 274130), (632, 246370), (694, 224360), (710, 219304), (790, 197096), (1136, 137065), (1264, 123185), (1388, 112180), (1420, 109652), (1580, 98548), (1735, 89744), (2776, 56090), (2840, 54826), (3160, 49274), (3470, 44872), (5552, 28045), (5609, 27760), (5680, 27413), (6320, 24637), (6940, 22436), (11218, 13880)]