18528515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 24675840

約数和(自身を除く): 6147325

約数列:

[1, 5, 19, 41, 67, 71, 95, 205, 335, 355, 779, 1273, 1349, 2747, 2911, 3895, 4757, 6365, 6745, 13735, 14555, 23785, 52193, 55309, 90383, 195037, 260965, 276545, 451915, 975185, 3705703, 18528515]

約数ペア:

[(1, 18528515), (5, 3705703), (19, 975185), (41, 451915), (67, 276545), (71, 260965), (95, 195037), (205, 90383), (335, 55309), (355, 52193), (779, 23785), (1273, 14555), (1349, 13735), (2747, 6745), (2911, 6365), (3895, 4757)]