55900900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 134053920

約数和(自身を除く): 78153020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 178, 220, 275, 356, 445, 550, 571, 890, 979, 1100, 1142, 1780, 1958, 2225, 2284, 2855, 3916, 4450, 4895, 5710, 6281, 8900, 9790, 11420, 12562, 14275, 19580, 24475, 25124, 28550, 31405, 48950, 50819, 57100, 62810, 97900, 101638, 125620, 157025, 203276, 254095, 314050, 508190, 559009, 628100, 1016380, 1118018, 1270475, 2236036, 2540950, 2795045, 5081900, 5590090, 11180180, 13975225, 27950450, 55900900]

約数ペア:

[(1, 55900900), (2, 27950450), (4, 13975225), (5, 11180180), (10, 5590090), (11, 5081900), (20, 2795045), (22, 2540950), (25, 2236036), (44, 1270475), (50, 1118018), (55, 1016380), (89, 628100), (100, 559009), (110, 508190), (178, 314050), (220, 254095), (275, 203276), (356, 157025), (445, 125620), (550, 101638), (571, 97900), (890, 62810), (979, 57100), (1100, 50819), (1142, 48950), (1780, 31405), (1958, 28550), (2225, 25124), (2284, 24475), (2855, 19580), (3916, 14275), (4450, 12562), (4895, 11420), (5710, 9790), (6281, 8900)]