161840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^2$

素因数の和:54

約数の個数: 60

約数和(自身を含む): 456816

約数和(自身を除く): 294976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 289, 340, 476, 560, 578, 595, 680, 952, 1156, 1190, 1360, 1445, 1904, 2023, 2312, 2380, 2890, 4046, 4624, 4760, 5780, 8092, 9520, 10115, 11560, 16184, 20230, 23120, 32368, 40460, 80920, 161840]

約数ペア:

[(1, 161840), (2, 80920), (4, 40460), (5, 32368), (7, 23120), (8, 20230), (10, 16184), (14, 11560), (16, 10115), (17, 9520), (20, 8092), (28, 5780), (34, 4760), (35, 4624), (40, 4046), (56, 2890), (68, 2380), (70, 2312), (80, 2023), (85, 1904), (112, 1445), (119, 1360), (136, 1190), (140, 1156), (170, 952), (238, 680), (272, 595), (280, 578), (289, 560), (340, 476)]