28781860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 62786304

約数和(自身を除く): 34004444

約数列:

[1, 2, 4, 5, 10, 20, 47, 67, 94, 134, 188, 235, 268, 335, 457, 470, 670, 914, 940, 1340, 1828, 2285, 3149, 4570, 6298, 9140, 12596, 15745, 21479, 30619, 31490, 42958, 61238, 62980, 85916, 107395, 122476, 153095, 214790, 306190, 429580, 612380, 1439093, 2878186, 5756372, 7195465, 14390930, 28781860]

約数ペア:

[(1, 28781860), (2, 14390930), (4, 7195465), (5, 5756372), (10, 2878186), (20, 1439093), (47, 612380), (67, 429580), (94, 306190), (134, 214790), (188, 153095), (235, 122476), (268, 107395), (335, 85916), (457, 62980), (470, 61238), (670, 42958), (914, 31490), (940, 30619), (1340, 21479), (1828, 15745), (2285, 12596), (3149, 9140), (4570, 6298)]