25663940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 56179200

約数和(自身を除く): 30515260

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 79, 148, 158, 185, 316, 370, 395, 439, 740, 790, 878, 1580, 1756, 2195, 2923, 4390, 5846, 8780, 11692, 14615, 16243, 29230, 32486, 34681, 58460, 64972, 69362, 81215, 138724, 162430, 173405, 324860, 346810, 693620, 1283197, 2566394, 5132788, 6415985, 12831970, 25663940]

約数ペア:

[(1, 25663940), (2, 12831970), (4, 6415985), (5, 5132788), (10, 2566394), (20, 1283197), (37, 693620), (74, 346810), (79, 324860), (148, 173405), (158, 162430), (185, 138724), (316, 81215), (370, 69362), (395, 64972), (439, 58460), (740, 34681), (790, 32486), (878, 29230), (1580, 16243), (1756, 14615), (2195, 11692), (2923, 8780), (4390, 5846)]