381720820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{4231}}^1$

素因数の和:4600

約数の個数: 48

約数和(自身を含む): 865968768

約数和(自身を除く): 484247948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 347, 694, 1388, 1735, 3470, 4231, 4511, 6940, 8462, 9022, 16924, 18044, 21155, 22555, 42310, 45110, 55003, 84620, 90220, 110006, 220012, 275015, 550030, 1100060, 1468157, 2936314, 5872628, 7340785, 14681570, 19086041, 29363140, 38172082, 76344164, 95430205, 190860410, 381720820]

約数ペア:

[(1, 381720820), (2, 190860410), (4, 95430205), (5, 76344164), (10, 38172082), (13, 29363140), (20, 19086041), (26, 14681570), (52, 7340785), (65, 5872628), (130, 2936314), (260, 1468157), (347, 1100060), (694, 550030), (1388, 275015), (1735, 220012), (3470, 110006), (4231, 90220), (4511, 84620), (6940, 55003), (8462, 45110), (9022, 42310), (16924, 22555), (18044, 21155)]