19935440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:484

約数の個数: 80

約数和(自身を含む): 53663232

約数和(自身を除く): 33727792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 367, 388, 485, 560, 679, 734, 776, 970, 1358, 1468, 1552, 1835, 1940, 2569, 2716, 2936, 3395, 3670, 3880, 5138, 5432, 5872, 6790, 7340, 7760, 10276, 10864, 12845, 13580, 14680, 20552, 25690, 27160, 29360, 35599, 41104, 51380, 54320, 71198, 102760, 142396, 177995, 205520, 249193, 284792, 355990, 498386, 569584, 711980, 996772, 1245965, 1423960, 1993544, 2491930, 2847920, 3987088, 4983860, 9967720, 19935440]

約数ペア:

[(1, 19935440), (2, 9967720), (4, 4983860), (5, 3987088), (7, 2847920), (8, 2491930), (10, 1993544), (14, 1423960), (16, 1245965), (20, 996772), (28, 711980), (35, 569584), (40, 498386), (56, 355990), (70, 284792), (80, 249193), (97, 205520), (112, 177995), (140, 142396), (194, 102760), (280, 71198), (367, 54320), (388, 51380), (485, 41104), (560, 35599), (679, 29360), (734, 27160), (776, 25690), (970, 20552), (1358, 14680), (1468, 13580), (1552, 12845), (1835, 10864), (1940, 10276), (2569, 7760), (2716, 7340), (2936, 6790), (3395, 5872), (3670, 5432), (3880, 5138)]