21891686

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{6473}}^1$

素因数の和:6583

約数の個数: 16

約数和(自身を含む): 34959600

約数和(自身を除く): 13067914

約数列:

[1, 2, 19, 38, 89, 178, 1691, 3382, 6473, 12946, 122987, 245974, 576097, 1152194, 10945843, 21891686]

約数ペア:

[(1, 21891686), (2, 10945843), (19, 1152194), (38, 576097), (89, 245974), (178, 122987), (1691, 12946), (3382, 6473)]