201971380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{776813}}^1$

素因数の和:776835

約数の個数: 24

約数和(自身を含む): 456766632

約数和(自身を除く): 254795252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 776813, 1553626, 3107252, 3884065, 7768130, 10098569, 15536260, 20197138, 40394276, 50492845, 100985690, 201971380]

約数ペア:

[(1, 201971380), (2, 100985690), (4, 50492845), (5, 40394276), (10, 20197138), (13, 15536260), (20, 10098569), (26, 7768130), (52, 3884065), (65, 3107252), (130, 1553626), (260, 776813)]