20575515

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 34189056

約数和(自身を除く): 13613541

約数列:

[1, 3, 5, 15, 37, 111, 131, 185, 283, 393, 555, 655, 849, 1415, 1965, 4245, 4847, 10471, 14541, 24235, 31413, 37073, 52355, 72705, 111219, 157065, 185365, 556095, 1371701, 4115103, 6858505, 20575515]

約数ペア:

[(1, 20575515), (3, 6858505), (5, 4115103), (15, 1371701), (37, 556095), (111, 185365), (131, 157065), (185, 111219), (283, 72705), (393, 52355), (555, 37073), (655, 31413), (849, 24235), (1415, 14541), (1965, 10471), (4245, 4847)]