81560520

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{2797}}^1$

素因数の和:2826

約数の個数: 112

約数和(自身を含む): 275239260

約数和(自身を除く): 193678740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 729, 810, 972, 1080, 1215, 1458, 1620, 1944, 2430, 2797, 2916, 3240, 3645, 4860, 5594, 5832, 7290, 8391, 9720, 11188, 13985, 14580, 16782, 22376, 25173, 27970, 29160, 33564, 41955, 50346, 55940, 67128, 75519, 83910, 100692, 111880, 125865, 151038, 167820, 201384, 226557, 251730, 302076, 335640, 377595, 453114, 503460, 604152, 679671, 755190, 906228, 1006920, 1132785, 1359342, 1510380, 1812456, 2039013, 2265570, 2718684, 3020760, 3398355, 4078026, 4531140, 5437368, 6796710, 8156052, 9062280, 10195065, 13593420, 16312104, 20390130, 27186840, 40780260, 81560520]

約数ペア:

[(1, 81560520), (2, 40780260), (3, 27186840), (4, 20390130), (5, 16312104), (6, 13593420), (8, 10195065), (9, 9062280), (10, 8156052), (12, 6796710), (15, 5437368), (18, 4531140), (20, 4078026), (24, 3398355), (27, 3020760), (30, 2718684), (36, 2265570), (40, 2039013), (45, 1812456), (54, 1510380), (60, 1359342), (72, 1132785), (81, 1006920), (90, 906228), (108, 755190), (120, 679671), (135, 604152), (162, 503460), (180, 453114), (216, 377595), (243, 335640), (270, 302076), (324, 251730), (360, 226557), (405, 201384), (486, 167820), (540, 151038), (648, 125865), (729, 111880), (810, 100692), (972, 83910), (1080, 75519), (1215, 67128), (1458, 55940), (1620, 50346), (1944, 41955), (2430, 33564), (2797, 29160), (2916, 27970), (3240, 25173), (3645, 22376), (4860, 16782), (5594, 14580), (5832, 13985), (7290, 11188), (8391, 9720)]