81534320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:215

約数の個数: 160

約数和(自身を含む): 233318400

約数和(自身を除く): 151784080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 79, 80, 95, 97, 112, 133, 140, 152, 158, 190, 194, 266, 280, 304, 316, 380, 388, 395, 485, 532, 553, 560, 632, 665, 679, 760, 776, 790, 970, 1064, 1106, 1264, 1330, 1358, 1501, 1520, 1552, 1580, 1843, 1940, 2128, 2212, 2660, 2716, 2765, 3002, 3160, 3395, 3686, 3880, 4424, 5320, 5432, 5530, 6004, 6320, 6790, 7372, 7505, 7663, 7760, 8848, 9215, 10507, 10640, 10864, 11060, 12008, 12901, 13580, 14744, 15010, 15326, 18430, 21014, 22120, 24016, 25802, 27160, 29488, 30020, 30652, 36860, 38315, 42028, 44240, 51604, 52535, 53641, 54320, 60040, 61304, 64505, 73720, 76630, 84056, 103208, 105070, 107282, 120080, 122608, 129010, 145597, 147440, 153260, 168112, 206416, 210140, 214564, 258020, 268205, 291194, 306520, 420280, 429128, 516040, 536410, 582388, 613040, 727985, 840560, 858256, 1019179, 1032080, 1072820, 1164776, 1455970, 2038358, 2145640, 2329552, 2911940, 4076716, 4291280, 5095895, 5823880, 8153432, 10191790, 11647760, 16306864, 20383580, 40767160, 81534320]

約数ペア:

[(1, 81534320), (2, 40767160), (4, 20383580), (5, 16306864), (7, 11647760), (8, 10191790), (10, 8153432), (14, 5823880), (16, 5095895), (19, 4291280), (20, 4076716), (28, 2911940), (35, 2329552), (38, 2145640), (40, 2038358), (56, 1455970), (70, 1164776), (76, 1072820), (79, 1032080), (80, 1019179), (95, 858256), (97, 840560), (112, 727985), (133, 613040), (140, 582388), (152, 536410), (158, 516040), (190, 429128), (194, 420280), (266, 306520), (280, 291194), (304, 268205), (316, 258020), (380, 214564), (388, 210140), (395, 206416), (485, 168112), (532, 153260), (553, 147440), (560, 145597), (632, 129010), (665, 122608), (679, 120080), (760, 107282), (776, 105070), (790, 103208), (970, 84056), (1064, 76630), (1106, 73720), (1264, 64505), (1330, 61304), (1358, 60040), (1501, 54320), (1520, 53641), (1552, 52535), (1580, 51604), (1843, 44240), (1940, 42028), (2128, 38315), (2212, 36860), (2660, 30652), (2716, 30020), (2765, 29488), (3002, 27160), (3160, 25802), (3395, 24016), (3686, 22120), (3880, 21014), (4424, 18430), (5320, 15326), (5432, 15010), (5530, 14744), (6004, 13580), (6320, 12901), (6790, 12008), (7372, 11060), (7505, 10864), (7663, 10640), (7760, 10507), (8848, 9215)]