19720470840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{61297}}^1$

素因数の和:61701

約数の個数: 128

約数和(自身を含む): 67790684160

約数和(自身を除く): 48070213320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 383, 420, 766, 840, 1149, 1532, 1915, 2298, 2681, 3064, 3830, 4596, 5362, 5745, 7660, 8043, 9192, 10724, 11490, 13405, 15320, 16086, 21448, 22980, 26810, 32172, 40215, 45960, 53620, 61297, 64344, 80430, 107240, 122594, 160860, 183891, 245188, 306485, 321720, 367782, 429079, 490376, 612970, 735564, 858158, 919455, 1225940, 1287237, 1471128, 1716316, 1838910, 2145395, 2451880, 2574474, 3432632, 3677820, 4290790, 5148948, 6436185, 7355640, 8581580, 10297896, 12872370, 17163160, 23476751, 25744740, 46953502, 51489480, 70430253, 93907004, 117383755, 140860506, 164337257, 187814008, 234767510, 281721012, 328674514, 352151265, 469535020, 493011771, 563442024, 657349028, 704302530, 821686285, 939070040, 986023542, 1314698056, 1408605060, 1643372570, 1972047084, 2465058855, 2817210120, 3286745140, 3944094168, 4930117710, 6573490280, 9860235420, 19720470840]

約数ペア:

[(1, 19720470840), (2, 9860235420), (3, 6573490280), (4, 4930117710), (5, 3944094168), (6, 3286745140), (7, 2817210120), (8, 2465058855), (10, 1972047084), (12, 1643372570), (14, 1408605060), (15, 1314698056), (20, 986023542), (21, 939070040), (24, 821686285), (28, 704302530), (30, 657349028), (35, 563442024), (40, 493011771), (42, 469535020), (56, 352151265), (60, 328674514), (70, 281721012), (84, 234767510), (105, 187814008), (120, 164337257), (140, 140860506), (168, 117383755), (210, 93907004), (280, 70430253), (383, 51489480), (420, 46953502), (766, 25744740), (840, 23476751), (1149, 17163160), (1532, 12872370), (1915, 10297896), (2298, 8581580), (2681, 7355640), (3064, 6436185), (3830, 5148948), (4596, 4290790), (5362, 3677820), (5745, 3432632), (7660, 2574474), (8043, 2451880), (9192, 2145395), (10724, 1838910), (11490, 1716316), (13405, 1471128), (15320, 1287237), (16086, 1225940), (21448, 919455), (22980, 858158), (26810, 735564), (32172, 612970), (40215, 490376), (45960, 429079), (53620, 367782), (61297, 321720), (64344, 306485), (80430, 245188), (107240, 183891), (122594, 160860)]