28285985

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 15150751

約数列:

[1, 5, 7, 13, 35, 49, 65, 83, 91, 107, 245, 415, 455, 535, 581, 637, 749, 1079, 1391, 2905, 3185, 3745, 4067, 5243, 5395, 6955, 7553, 8881, 9737, 20335, 26215, 37765, 44405, 48685, 52871, 62167, 68159, 115453, 264355, 310835, 340795, 435169, 577265, 808171, 2175845, 4040855, 5657197, 28285985]

約数ペア:

[(1, 28285985), (5, 5657197), (7, 4040855), (13, 2175845), (35, 808171), (49, 577265), (65, 435169), (83, 340795), (91, 310835), (107, 264355), (245, 115453), (415, 68159), (455, 62167), (535, 52871), (581, 48685), (637, 44405), (749, 37765), (1079, 26215), (1391, 20335), (2905, 9737), (3185, 8881), (3745, 7553), (4067, 6955), (5243, 5395)]