81831040

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4409}}^1$

素因数の和:4457

約数の個数: 64

約数和(自身を含む): 202419000

約数和(自身を除く): 120587960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 290, 320, 464, 580, 640, 928, 1160, 1856, 2320, 3712, 4409, 4640, 8818, 9280, 17636, 18560, 22045, 35272, 44090, 70544, 88180, 127861, 141088, 176360, 255722, 282176, 352720, 511444, 564352, 639305, 705440, 1022888, 1278610, 1410880, 2045776, 2557220, 2821760, 4091552, 5114440, 8183104, 10228880, 16366208, 20457760, 40915520, 81831040]

約数ペア:

[(1, 81831040), (2, 40915520), (4, 20457760), (5, 16366208), (8, 10228880), (10, 8183104), (16, 5114440), (20, 4091552), (29, 2821760), (32, 2557220), (40, 2045776), (58, 1410880), (64, 1278610), (80, 1022888), (116, 705440), (128, 639305), (145, 564352), (160, 511444), (232, 352720), (290, 282176), (320, 255722), (464, 176360), (580, 141088), (640, 127861), (928, 88180), (1160, 70544), (1856, 44090), (2320, 35272), (3712, 22045), (4409, 18560), (4640, 17636), (8818, 9280)]