11781819

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 20846592

約数和(自身を除く): 9064773

約数列:

[1, 3, 7, 9, 21, 23, 47, 63, 69, 141, 161, 173, 207, 329, 423, 483, 519, 987, 1081, 1211, 1449, 1557, 2961, 3243, 3633, 3979, 7567, 8131, 9729, 10899, 11937, 22701, 24393, 27853, 35811, 56917, 68103, 73179, 83559, 170751, 187013, 250677, 512253, 561039, 1309091, 1683117, 3927273, 11781819]

約数ペア:

[(1, 11781819), (3, 3927273), (7, 1683117), (9, 1309091), (21, 561039), (23, 512253), (47, 250677), (63, 187013), (69, 170751), (141, 83559), (161, 73179), (173, 68103), (207, 56917), (329, 35811), (423, 27853), (483, 24393), (519, 22701), (987, 11937), (1081, 10899), (1211, 9729), (1449, 8131), (1557, 7567), (2961, 3979), (3243, 3633)]