71484140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 195197184

約数和(自身を除く): 123713044

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 49, 52, 62, 65, 70, 91, 98, 124, 130, 140, 155, 181, 182, 196, 217, 245, 260, 310, 362, 364, 403, 434, 455, 490, 620, 637, 724, 806, 868, 905, 910, 980, 1085, 1267, 1274, 1519, 1612, 1810, 1820, 2015, 2170, 2353, 2534, 2548, 2821, 3038, 3185, 3620, 4030, 4340, 4706, 5068, 5611, 5642, 6076, 6335, 6370, 7595, 8060, 8869, 9412, 11222, 11284, 11765, 12670, 12740, 14105, 15190, 16471, 17738, 19747, 22444, 23530, 25340, 28055, 28210, 30380, 32942, 35476, 39277, 39494, 44345, 47060, 56110, 56420, 65884, 72943, 78554, 78988, 82355, 88690, 98735, 112220, 115297, 145886, 157108, 164710, 177380, 196385, 197470, 230594, 274939, 291772, 329420, 364715, 392770, 394940, 461188, 510601, 549878, 576485, 729430, 785540, 1021202, 1099756, 1152970, 1374695, 1458860, 2042404, 2305940, 2553005, 2749390, 3574207, 5106010, 5498780, 7148414, 10212020, 14296828, 17871035, 35742070, 71484140]

約数ペア:

[(1, 71484140), (2, 35742070), (4, 17871035), (5, 14296828), (7, 10212020), (10, 7148414), (13, 5498780), (14, 5106010), (20, 3574207), (26, 2749390), (28, 2553005), (31, 2305940), (35, 2042404), (49, 1458860), (52, 1374695), (62, 1152970), (65, 1099756), (70, 1021202), (91, 785540), (98, 729430), (124, 576485), (130, 549878), (140, 510601), (155, 461188), (181, 394940), (182, 392770), (196, 364715), (217, 329420), (245, 291772), (260, 274939), (310, 230594), (362, 197470), (364, 196385), (403, 177380), (434, 164710), (455, 157108), (490, 145886), (620, 115297), (637, 112220), (724, 98735), (806, 88690), (868, 82355), (905, 78988), (910, 78554), (980, 72943), (1085, 65884), (1267, 56420), (1274, 56110), (1519, 47060), (1612, 44345), (1810, 39494), (1820, 39277), (2015, 35476), (2170, 32942), (2353, 30380), (2534, 28210), (2548, 28055), (2821, 25340), (3038, 23530), (3185, 22444), (3620, 19747), (4030, 17738), (4340, 16471), (4706, 15190), (5068, 14105), (5611, 12740), (5642, 12670), (6076, 11765), (6335, 11284), (6370, 11222), (7595, 9412), (8060, 8869)]