81531780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 192

約数和(自身を含む): 268240896

約数和(自身を除く): 186709116

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 23, 30, 33, 41, 44, 46, 55, 60, 66, 69, 82, 92, 110, 115, 123, 131, 132, 138, 164, 165, 205, 220, 230, 246, 253, 262, 276, 330, 345, 393, 410, 451, 460, 492, 506, 524, 615, 655, 660, 690, 759, 786, 820, 902, 943, 1012, 1230, 1265, 1310, 1353, 1380, 1441, 1518, 1572, 1804, 1886, 1965, 2255, 2460, 2530, 2620, 2706, 2829, 2882, 3013, 3036, 3772, 3795, 3930, 4323, 4510, 4715, 5060, 5371, 5412, 5658, 5764, 6026, 6765, 7205, 7590, 7860, 8646, 9020, 9039, 9430, 10373, 10742, 11316, 12052, 13530, 14145, 14410, 15065, 15180, 16113, 17292, 18078, 18860, 20746, 21484, 21615, 26855, 27060, 28290, 28820, 30130, 31119, 32226, 33143, 36156, 41492, 43230, 45195, 51865, 53710, 56580, 59081, 60260, 62238, 64452, 66286, 80565, 86460, 90390, 99429, 103730, 107420, 118162, 123533, 124476, 132572, 155595, 161130, 165715, 177243, 180780, 198858, 207460, 236324, 247066, 295405, 311190, 322260, 331430, 354486, 370599, 397716, 494132, 497145, 590810, 617665, 622380, 662860, 708972, 741198, 886215, 994290, 1181620, 1235330, 1358863, 1482396, 1772430, 1852995, 1988580, 2470660, 2717726, 3544860, 3705990, 4076589, 5435452, 6794315, 7411980, 8153178, 13588630, 16306356, 20382945, 27177260, 40765890, 81531780]

約数ペア:

[(1, 81531780), (2, 40765890), (3, 27177260), (4, 20382945), (5, 16306356), (6, 13588630), (10, 8153178), (11, 7411980), (12, 6794315), (15, 5435452), (20, 4076589), (22, 3705990), (23, 3544860), (30, 2717726), (33, 2470660), (41, 1988580), (44, 1852995), (46, 1772430), (55, 1482396), (60, 1358863), (66, 1235330), (69, 1181620), (82, 994290), (92, 886215), (110, 741198), (115, 708972), (123, 662860), (131, 622380), (132, 617665), (138, 590810), (164, 497145), (165, 494132), (205, 397716), (220, 370599), (230, 354486), (246, 331430), (253, 322260), (262, 311190), (276, 295405), (330, 247066), (345, 236324), (393, 207460), (410, 198858), (451, 180780), (460, 177243), (492, 165715), (506, 161130), (524, 155595), (615, 132572), (655, 124476), (660, 123533), (690, 118162), (759, 107420), (786, 103730), (820, 99429), (902, 90390), (943, 86460), (1012, 80565), (1230, 66286), (1265, 64452), (1310, 62238), (1353, 60260), (1380, 59081), (1441, 56580), (1518, 53710), (1572, 51865), (1804, 45195), (1886, 43230), (1965, 41492), (2255, 36156), (2460, 33143), (2530, 32226), (2620, 31119), (2706, 30130), (2829, 28820), (2882, 28290), (3013, 27060), (3036, 26855), (3772, 21615), (3795, 21484), (3930, 20746), (4323, 18860), (4510, 18078), (4715, 17292), (5060, 16113), (5371, 15180), (5412, 15065), (5658, 14410), (5764, 14145), (6026, 13530), (6765, 12052), (7205, 11316), (7590, 10742), (7860, 10373), (8646, 9430), (9020, 9039)]