81699660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 216

約数和(自身を含む): 295036560

約数和(自身を除く): 213336900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 59, 60, 63, 70, 84, 90, 98, 105, 118, 126, 140, 147, 157, 177, 180, 196, 210, 236, 245, 252, 294, 295, 314, 315, 354, 413, 420, 441, 471, 490, 531, 588, 590, 628, 630, 708, 735, 785, 826, 882, 885, 942, 980, 1062, 1099, 1180, 1239, 1260, 1413, 1470, 1570, 1652, 1764, 1770, 1884, 2065, 2124, 2198, 2205, 2355, 2478, 2655, 2826, 2891, 2940, 3140, 3297, 3540, 3717, 4130, 4396, 4410, 4710, 4956, 5310, 5495, 5652, 5782, 6195, 6594, 7065, 7434, 7693, 8260, 8673, 8820, 9263, 9420, 9891, 10620, 10990, 11564, 12390, 13188, 14130, 14455, 14868, 15386, 16485, 17346, 18526, 18585, 19782, 21980, 23079, 24780, 26019, 27789, 28260, 28910, 30772, 32970, 34692, 37052, 37170, 38465, 39564, 43365, 46158, 46315, 49455, 52038, 55578, 57820, 64841, 65940, 69237, 74340, 76930, 83367, 86730, 92316, 92630, 98910, 104076, 111156, 115395, 129682, 130095, 138474, 138945, 153860, 166734, 173460, 185260, 194523, 197820, 230790, 259364, 260190, 276948, 277890, 324205, 333468, 346185, 389046, 416835, 453887, 461580, 520380, 555780, 583569, 648410, 692370, 778092, 833670, 907774, 972615, 1167138, 1296820, 1361661, 1384740, 1667340, 1815548, 1945230, 2269435, 2334276, 2723322, 2917845, 3890460, 4084983, 4538870, 5446644, 5835690, 6808305, 8169966, 9077740, 11671380, 13616610, 16339932, 20424915, 27233220, 40849830, 81699660]

約数ペア:

[(1, 81699660), (2, 40849830), (3, 27233220), (4, 20424915), (5, 16339932), (6, 13616610), (7, 11671380), (9, 9077740), (10, 8169966), (12, 6808305), (14, 5835690), (15, 5446644), (18, 4538870), (20, 4084983), (21, 3890460), (28, 2917845), (30, 2723322), (35, 2334276), (36, 2269435), (42, 1945230), (45, 1815548), (49, 1667340), (59, 1384740), (60, 1361661), (63, 1296820), (70, 1167138), (84, 972615), (90, 907774), (98, 833670), (105, 778092), (118, 692370), (126, 648410), (140, 583569), (147, 555780), (157, 520380), (177, 461580), (180, 453887), (196, 416835), (210, 389046), (236, 346185), (245, 333468), (252, 324205), (294, 277890), (295, 276948), (314, 260190), (315, 259364), (354, 230790), (413, 197820), (420, 194523), (441, 185260), (471, 173460), (490, 166734), (531, 153860), (588, 138945), (590, 138474), (628, 130095), (630, 129682), (708, 115395), (735, 111156), (785, 104076), (826, 98910), (882, 92630), (885, 92316), (942, 86730), (980, 83367), (1062, 76930), (1099, 74340), (1180, 69237), (1239, 65940), (1260, 64841), (1413, 57820), (1470, 55578), (1570, 52038), (1652, 49455), (1764, 46315), (1770, 46158), (1884, 43365), (2065, 39564), (2124, 38465), (2198, 37170), (2205, 37052), (2355, 34692), (2478, 32970), (2655, 30772), (2826, 28910), (2891, 28260), (2940, 27789), (3140, 26019), (3297, 24780), (3540, 23079), (3717, 21980), (4130, 19782), (4396, 18585), (4410, 18526), (4710, 17346), (4956, 16485), (5310, 15386), (5495, 14868), (5652, 14455), (5782, 14130), (6195, 13188), (6594, 12390), (7065, 11564), (7434, 10990), (7693, 10620), (8260, 9891), (8673, 9420), (8820, 9263)]