80129720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{677}}^1$

素因数の和:968

約数の個数: 64

約数和(自身を含む): 197704800

約数和(自身を除く): 117575080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 269, 440, 538, 677, 1076, 1345, 1354, 2152, 2690, 2708, 2959, 3385, 5380, 5416, 5918, 6770, 7447, 10760, 11836, 13540, 14795, 14894, 23672, 27080, 29590, 29788, 37235, 59180, 59576, 74470, 118360, 148940, 182113, 297880, 364226, 728452, 910565, 1456904, 1821130, 2003243, 3642260, 4006486, 7284520, 8012972, 10016215, 16025944, 20032430, 40064860, 80129720]

約数ペア:

[(1, 80129720), (2, 40064860), (4, 20032430), (5, 16025944), (8, 10016215), (10, 8012972), (11, 7284520), (20, 4006486), (22, 3642260), (40, 2003243), (44, 1821130), (55, 1456904), (88, 910565), (110, 728452), (220, 364226), (269, 297880), (440, 182113), (538, 148940), (677, 118360), (1076, 74470), (1345, 59576), (1354, 59180), (2152, 37235), (2690, 29788), (2708, 29590), (2959, 27080), (3385, 23672), (5380, 14894), (5416, 14795), (5918, 13540), (6770, 11836), (7447, 10760)]