28091800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{113}}^2$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 71887140

約数和(自身を除く): 43795340

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 113, 200, 220, 226, 275, 440, 452, 550, 565, 904, 1100, 1130, 1243, 2200, 2260, 2486, 2825, 4520, 4972, 5650, 6215, 9944, 11300, 12430, 12769, 22600, 24860, 25538, 31075, 49720, 51076, 62150, 63845, 102152, 124300, 127690, 140459, 248600, 255380, 280918, 319225, 510760, 561836, 638450, 702295, 1123672, 1276900, 1404590, 2553800, 2809180, 3511475, 5618360, 7022950, 14045900, 28091800]

約数ペア:

[(1, 28091800), (2, 14045900), (4, 7022950), (5, 5618360), (8, 3511475), (10, 2809180), (11, 2553800), (20, 1404590), (22, 1276900), (25, 1123672), (40, 702295), (44, 638450), (50, 561836), (55, 510760), (88, 319225), (100, 280918), (110, 255380), (113, 248600), (200, 140459), (220, 127690), (226, 124300), (275, 102152), (440, 63845), (452, 62150), (550, 51076), (565, 49720), (904, 31075), (1100, 25538), (1130, 24860), (1243, 22600), (2200, 12769), (2260, 12430), (2486, 11300), (2825, 9944), (4520, 6215), (4972, 5650)]