81978080

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30139}}^1$

素因数の和:30171

約数の個数: 48

約数和(自身を含む): 205072560

約数和(自身を除く): 123094480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 30139, 60278, 120556, 150695, 241112, 301390, 482224, 512363, 602780, 964448, 1024726, 1205560, 2049452, 2411120, 2561815, 4098904, 4822240, 5123630, 8197808, 10247260, 16395616, 20494520, 40989040, 81978080]

約数ペア:

[(1, 81978080), (2, 40989040), (4, 20494520), (5, 16395616), (8, 10247260), (10, 8197808), (16, 5123630), (17, 4822240), (20, 4098904), (32, 2561815), (34, 2411120), (40, 2049452), (68, 1205560), (80, 1024726), (85, 964448), (136, 602780), (160, 512363), (170, 482224), (272, 301390), (340, 241112), (544, 150695), (680, 120556), (1360, 60278), (2720, 30139)]