281670820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:349

約数の個数: 96

約数和(自身を含む): 647740800

約数和(自身を除く): 366069980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 101, 164, 179, 190, 202, 205, 358, 380, 404, 410, 505, 716, 779, 820, 895, 1010, 1558, 1790, 1919, 2020, 3116, 3401, 3580, 3838, 3895, 4141, 6802, 7339, 7676, 7790, 8282, 9595, 13604, 14678, 15580, 16564, 17005, 18079, 19190, 20705, 29356, 34010, 36158, 36695, 38380, 41410, 68020, 72316, 73390, 78679, 82820, 90395, 139441, 146780, 157358, 180790, 278882, 314716, 343501, 361580, 393395, 557764, 687002, 697205, 741239, 786790, 1374004, 1394410, 1482478, 1573580, 1717505, 2788820, 2964956, 3435010, 3706195, 6870020, 7412390, 14083541, 14824780, 28167082, 56334164, 70417705, 140835410, 281670820]

約数ペア:

[(1, 281670820), (2, 140835410), (4, 70417705), (5, 56334164), (10, 28167082), (19, 14824780), (20, 14083541), (38, 7412390), (41, 6870020), (76, 3706195), (82, 3435010), (95, 2964956), (101, 2788820), (164, 1717505), (179, 1573580), (190, 1482478), (202, 1394410), (205, 1374004), (358, 786790), (380, 741239), (404, 697205), (410, 687002), (505, 557764), (716, 393395), (779, 361580), (820, 343501), (895, 314716), (1010, 278882), (1558, 180790), (1790, 157358), (1919, 146780), (2020, 139441), (3116, 90395), (3401, 82820), (3580, 78679), (3838, 73390), (3895, 72316), (4141, 68020), (6802, 41410), (7339, 38380), (7676, 36695), (7790, 36158), (8282, 34010), (9595, 29356), (13604, 20705), (14678, 19190), (15580, 18079), (16564, 17005)]