28004185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 39533184

約数和(自身を除く): 11528999

約数列:

[1, 5, 11, 17, 55, 61, 85, 187, 305, 491, 671, 935, 1037, 2455, 3355, 5185, 5401, 8347, 11407, 27005, 29951, 41735, 57035, 91817, 149755, 329461, 459085, 509167, 1647305, 2545835, 5600837, 28004185]

約数ペア:

[(1, 28004185), (5, 5600837), (11, 2545835), (17, 1647305), (55, 509167), (61, 459085), (85, 329461), (187, 149755), (305, 91817), (491, 57035), (671, 41735), (935, 29951), (1037, 27005), (2455, 11407), (3355, 8347), (5185, 5401)]