81564340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 215066880

約数和(自身を除く): 133502540

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 55, 65, 76, 79, 95, 110, 130, 143, 158, 190, 209, 220, 247, 260, 286, 316, 361, 380, 395, 418, 494, 572, 715, 722, 790, 836, 869, 988, 1027, 1045, 1235, 1430, 1444, 1501, 1580, 1738, 1805, 2054, 2090, 2470, 2717, 2860, 3002, 3476, 3610, 3971, 4108, 4180, 4345, 4693, 4940, 5135, 5434, 6004, 7220, 7505, 7942, 8690, 9386, 10270, 10868, 11297, 13585, 15010, 15884, 16511, 17380, 18772, 19513, 19855, 20540, 22594, 23465, 27170, 28519, 30020, 33022, 39026, 39710, 45188, 46930, 51623, 54340, 56485, 57038, 66044, 78052, 79420, 82555, 93860, 97565, 103246, 112970, 114076, 142595, 165110, 195130, 206492, 214643, 225940, 258115, 285190, 313709, 330220, 370747, 390260, 429286, 516230, 570380, 627418, 741494, 858572, 1032460, 1073215, 1254836, 1482988, 1568545, 1853735, 2146430, 3137090, 3707470, 4078217, 4292860, 6274180, 7414940, 8156434, 16312868, 20391085, 40782170, 81564340]

約数ペア:

[(1, 81564340), (2, 40782170), (4, 20391085), (5, 16312868), (10, 8156434), (11, 7414940), (13, 6274180), (19, 4292860), (20, 4078217), (22, 3707470), (26, 3137090), (38, 2146430), (44, 1853735), (52, 1568545), (55, 1482988), (65, 1254836), (76, 1073215), (79, 1032460), (95, 858572), (110, 741494), (130, 627418), (143, 570380), (158, 516230), (190, 429286), (209, 390260), (220, 370747), (247, 330220), (260, 313709), (286, 285190), (316, 258115), (361, 225940), (380, 214643), (395, 206492), (418, 195130), (494, 165110), (572, 142595), (715, 114076), (722, 112970), (790, 103246), (836, 97565), (869, 93860), (988, 82555), (1027, 79420), (1045, 78052), (1235, 66044), (1430, 57038), (1444, 56485), (1501, 54340), (1580, 51623), (1738, 46930), (1805, 45188), (2054, 39710), (2090, 39026), (2470, 33022), (2717, 30020), (2860, 28519), (3002, 27170), (3476, 23465), (3610, 22594), (3971, 20540), (4108, 19855), (4180, 19513), (4345, 18772), (4693, 17380), (4940, 16511), (5135, 15884), (5434, 15010), (6004, 13585), (7220, 11297), (7505, 10868), (7942, 10270), (8690, 9386)]