81071280

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{12511}}^1$

素因数の和:12536

約数の個数: 100

約数和(自身を含む): 281595072

約数和(自身を除く): 200523792

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 270, 324, 360, 405, 432, 540, 648, 720, 810, 1080, 1296, 1620, 2160, 3240, 6480, 12511, 25022, 37533, 50044, 62555, 75066, 100088, 112599, 125110, 150132, 187665, 200176, 225198, 250220, 300264, 337797, 375330, 450396, 500440, 562995, 600528, 675594, 750660, 900792, 1000880, 1013391, 1125990, 1351188, 1501320, 1688985, 1801584, 2026782, 2251980, 2702376, 3002640, 3377970, 4053564, 4503960, 5066955, 5404752, 6755940, 8107128, 9007920, 10133910, 13511880, 16214256, 20267820, 27023760, 40535640, 81071280]

約数ペア:

[(1, 81071280), (2, 40535640), (3, 27023760), (4, 20267820), (5, 16214256), (6, 13511880), (8, 10133910), (9, 9007920), (10, 8107128), (12, 6755940), (15, 5404752), (16, 5066955), (18, 4503960), (20, 4053564), (24, 3377970), (27, 3002640), (30, 2702376), (36, 2251980), (40, 2026782), (45, 1801584), (48, 1688985), (54, 1501320), (60, 1351188), (72, 1125990), (80, 1013391), (81, 1000880), (90, 900792), (108, 750660), (120, 675594), (135, 600528), (144, 562995), (162, 500440), (180, 450396), (216, 375330), (240, 337797), (270, 300264), (324, 250220), (360, 225198), (405, 200176), (432, 187665), (540, 150132), (648, 125110), (720, 112599), (810, 100088), (1080, 75066), (1296, 62555), (1620, 50044), (2160, 37533), (3240, 25022), (6480, 12511)]