19517680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:423

約数の個数: 120

約数和(自身を含む): 56996352

約数和(自身を除く): 37478672

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 383, 392, 455, 490, 520, 560, 637, 728, 766, 784, 910, 980, 1040, 1274, 1456, 1532, 1820, 1915, 1960, 2548, 2681, 3064, 3185, 3640, 3830, 3920, 4979, 5096, 5362, 6128, 6370, 7280, 7660, 9958, 10192, 10724, 12740, 13405, 15320, 18767, 19916, 21448, 24895, 25480, 26810, 30640, 34853, 37534, 39832, 42896, 49790, 50960, 53620, 69706, 75068, 79664, 93835, 99580, 107240, 139412, 150136, 174265, 187670, 199160, 214480, 243971, 278824, 300272, 348530, 375340, 398320, 487942, 557648, 697060, 750680, 975884, 1219855, 1394120, 1501360, 1951768, 2439710, 2788240, 3903536, 4879420, 9758840, 19517680]

約数ペア:

[(1, 19517680), (2, 9758840), (4, 4879420), (5, 3903536), (7, 2788240), (8, 2439710), (10, 1951768), (13, 1501360), (14, 1394120), (16, 1219855), (20, 975884), (26, 750680), (28, 697060), (35, 557648), (40, 487942), (49, 398320), (52, 375340), (56, 348530), (65, 300272), (70, 278824), (80, 243971), (91, 214480), (98, 199160), (104, 187670), (112, 174265), (130, 150136), (140, 139412), (182, 107240), (196, 99580), (208, 93835), (245, 79664), (260, 75068), (280, 69706), (364, 53620), (383, 50960), (392, 49790), (455, 42896), (490, 39832), (520, 37534), (560, 34853), (637, 30640), (728, 26810), (766, 25480), (784, 24895), (910, 21448), (980, 19916), (1040, 18767), (1274, 15320), (1456, 13405), (1532, 12740), (1820, 10724), (1915, 10192), (1960, 9958), (2548, 7660), (2681, 7280), (3064, 6370), (3185, 6128), (3640, 5362), (3830, 5096), (3920, 4979)]