18401380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 40803840

約数和(自身を除く): 22402460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 109, 115, 218, 230, 367, 436, 460, 545, 734, 1090, 1468, 1835, 2180, 2507, 3670, 5014, 7340, 8441, 10028, 12535, 16882, 25070, 33764, 40003, 42205, 50140, 80006, 84410, 160012, 168820, 200015, 400030, 800060, 920069, 1840138, 3680276, 4600345, 9200690, 18401380]

約数ペア:

[(1, 18401380), (2, 9200690), (4, 4600345), (5, 3680276), (10, 1840138), (20, 920069), (23, 800060), (46, 400030), (92, 200015), (109, 168820), (115, 160012), (218, 84410), (230, 80006), (367, 50140), (436, 42205), (460, 40003), (545, 33764), (734, 25070), (1090, 16882), (1468, 12535), (1835, 10028), (2180, 8441), (2507, 7340), (3670, 5014)]