21162705

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2243}}^1$

素因数の和:2305

約数の個数: 32

約数和(自身を含む): 36837504

約数和(自身を除く): 15674799

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2243, 3145, 6729, 9435, 11215, 33645, 38131, 82991, 114393, 190655, 248973, 414955, 571965, 1244865, 1410847, 4232541, 7054235, 21162705]

約数ペア:

[(1, 21162705), (3, 7054235), (5, 4232541), (15, 1410847), (17, 1244865), (37, 571965), (51, 414955), (85, 248973), (111, 190655), (185, 114393), (255, 82991), (555, 38131), (629, 33645), (1887, 11215), (2243, 9435), (3145, 6729)]