42647720

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1613}}^1$

素因数の和:2285

約数の個数: 32

約数和(自身を含む): 96162120

約数和(自身を除く): 53514400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 1613, 2644, 3226, 3305, 5288, 6452, 6610, 8065, 12904, 13220, 16130, 26440, 32260, 64520, 1066193, 2132386, 4264772, 5330965, 8529544, 10661930, 21323860, 42647720]

約数ペア:

[(1, 42647720), (2, 21323860), (4, 10661930), (5, 8529544), (8, 5330965), (10, 4264772), (20, 2132386), (40, 1066193), (661, 64520), (1322, 32260), (1613, 26440), (2644, 16130), (3226, 13220), (3305, 12904), (5288, 8065), (6452, 6610)]