213789940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:306

約数の個数: 144

約数和(自身を含む): 571514832

約数和(自身を除く): 357724892

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 97, 98, 130, 140, 173, 182, 194, 196, 245, 260, 346, 364, 388, 455, 485, 490, 637, 679, 692, 865, 910, 970, 980, 1211, 1261, 1274, 1358, 1730, 1820, 1940, 2249, 2422, 2522, 2548, 2716, 3185, 3395, 3460, 4498, 4753, 4844, 5044, 6055, 6305, 6370, 6790, 8477, 8827, 8996, 9506, 11245, 12110, 12610, 12740, 13580, 15743, 16781, 16954, 17654, 19012, 22490, 23765, 24220, 25220, 31486, 33562, 33908, 35308, 42385, 44135, 44980, 47530, 61789, 62972, 67124, 78715, 83905, 84770, 88270, 95060, 110201, 117467, 123578, 157430, 167810, 169540, 176540, 218153, 220402, 234934, 247156, 308945, 314860, 335620, 436306, 440804, 469868, 551005, 587335, 617890, 822269, 872612, 1090765, 1102010, 1174670, 1235780, 1527071, 1644538, 2181530, 2204020, 2349340, 3054142, 3289076, 4111345, 4363060, 6108284, 7635355, 8222690, 10689497, 15270710, 16445380, 21378994, 30541420, 42757988, 53447485, 106894970, 213789940]

約数ペア:

[(1, 213789940), (2, 106894970), (4, 53447485), (5, 42757988), (7, 30541420), (10, 21378994), (13, 16445380), (14, 15270710), (20, 10689497), (26, 8222690), (28, 7635355), (35, 6108284), (49, 4363060), (52, 4111345), (65, 3289076), (70, 3054142), (91, 2349340), (97, 2204020), (98, 2181530), (130, 1644538), (140, 1527071), (173, 1235780), (182, 1174670), (194, 1102010), (196, 1090765), (245, 872612), (260, 822269), (346, 617890), (364, 587335), (388, 551005), (455, 469868), (485, 440804), (490, 436306), (637, 335620), (679, 314860), (692, 308945), (865, 247156), (910, 234934), (970, 220402), (980, 218153), (1211, 176540), (1261, 169540), (1274, 167810), (1358, 157430), (1730, 123578), (1820, 117467), (1940, 110201), (2249, 95060), (2422, 88270), (2522, 84770), (2548, 83905), (2716, 78715), (3185, 67124), (3395, 62972), (3460, 61789), (4498, 47530), (4753, 44980), (4844, 44135), (5044, 42385), (6055, 35308), (6305, 33908), (6370, 33562), (6790, 31486), (8477, 25220), (8827, 24220), (8996, 23765), (9506, 22490), (11245, 19012), (12110, 17654), (12610, 16954), (12740, 16781), (13580, 15743)]