320425840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8059}}^1$

素因数の和:8150

約数の個数: 80

約数和(自身を含む): 863516160

約数和(自身を除く): 543090320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 2485, 2840, 3976, 4970, 5680, 7952, 8059, 9940, 16118, 19880, 32236, 39760, 40295, 56413, 64472, 80590, 112826, 128944, 161180, 225652, 282065, 322360, 451304, 564130, 572189, 644720, 902608, 1128260, 1144378, 2256520, 2288756, 2860945, 4005323, 4513040, 4577512, 5721890, 8010646, 9155024, 11443780, 16021292, 20026615, 22887560, 32042584, 40053230, 45775120, 64085168, 80106460, 160212920, 320425840]

約数ペア:

[(1, 320425840), (2, 160212920), (4, 80106460), (5, 64085168), (7, 45775120), (8, 40053230), (10, 32042584), (14, 22887560), (16, 20026615), (20, 16021292), (28, 11443780), (35, 9155024), (40, 8010646), (56, 5721890), (70, 4577512), (71, 4513040), (80, 4005323), (112, 2860945), (140, 2288756), (142, 2256520), (280, 1144378), (284, 1128260), (355, 902608), (497, 644720), (560, 572189), (568, 564130), (710, 451304), (994, 322360), (1136, 282065), (1420, 225652), (1988, 161180), (2485, 128944), (2840, 112826), (3976, 80590), (4970, 64472), (5680, 56413), (7952, 40295), (8059, 39760), (9940, 32236), (16118, 19880)]