20374515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 40974336

約数和(自身を除く): 20599821

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 911, 1065, 1491, 2485, 2733, 3195, 4473, 4555, 6377, 7455, 8199, 13665, 19131, 22365, 31885, 40995, 57393, 64681, 95655, 194043, 286965, 323405, 452767, 582129, 970215, 1358301, 2263835, 2910645, 4074903, 6791505, 20374515]

約数ペア:

[(1, 20374515), (3, 6791505), (5, 4074903), (7, 2910645), (9, 2263835), (15, 1358301), (21, 970215), (35, 582129), (45, 452767), (63, 323405), (71, 286965), (105, 194043), (213, 95655), (315, 64681), (355, 57393), (497, 40995), (639, 31885), (911, 22365), (1065, 19131), (1491, 13665), (2485, 8199), (2733, 7455), (3195, 6377), (4473, 4555)]