20792240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{347}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 55924992

約数和(自身を除く): 35132752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 107, 112, 140, 214, 280, 347, 428, 535, 560, 694, 749, 856, 1070, 1388, 1498, 1712, 1735, 2140, 2429, 2776, 2996, 3470, 3745, 4280, 4858, 5552, 5992, 6940, 7490, 8560, 9716, 11984, 12145, 13880, 14980, 19432, 24290, 27760, 29960, 37129, 38864, 48580, 59920, 74258, 97160, 148516, 185645, 194320, 259903, 297032, 371290, 519806, 594064, 742580, 1039612, 1299515, 1485160, 2079224, 2599030, 2970320, 4158448, 5198060, 10396120, 20792240]

約数ペア:

[(1, 20792240), (2, 10396120), (4, 5198060), (5, 4158448), (7, 2970320), (8, 2599030), (10, 2079224), (14, 1485160), (16, 1299515), (20, 1039612), (28, 742580), (35, 594064), (40, 519806), (56, 371290), (70, 297032), (80, 259903), (107, 194320), (112, 185645), (140, 148516), (214, 97160), (280, 74258), (347, 59920), (428, 48580), (535, 38864), (560, 37129), (694, 29960), (749, 27760), (856, 24290), (1070, 19432), (1388, 14980), (1498, 13880), (1712, 12145), (1735, 11984), (2140, 9716), (2429, 8560), (2776, 7490), (2996, 6940), (3470, 5992), (3745, 5552), (4280, 4858)]