280012460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:776

約数の個数: 144

約数和(自身を含む): 761483520

約数和(自身を除く): 481471060

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, 182, 196, 217, 245, 260, 310, 364, 403, 434, 455, 490, 620, 637, 709, 806, 868, 910, 980, 1085, 1274, 1418, 1519, 1612, 1820, 2015, 2170, 2548, 2821, 2836, 3038, 3185, 3545, 4030, 4340, 4963, 5642, 6076, 6370, 7090, 7595, 8060, 9217, 9926, 11284, 12740, 14105, 14180, 15190, 18434, 19747, 19852, 21979, 24815, 28210, 30380, 34741, 36868, 39494, 43958, 46085, 49630, 56420, 64519, 69482, 78988, 87916, 92170, 98735, 99260, 109895, 129038, 138964, 153853, 173705, 184340, 197470, 219790, 258076, 285727, 307706, 322595, 347410, 394940, 439580, 451633, 571454, 615412, 645190, 694820, 769265, 903266, 1076971, 1142908, 1290380, 1428635, 1538530, 1806532, 2000089, 2153942, 2258165, 2857270, 3077060, 4000178, 4307884, 4516330, 5384855, 5714540, 8000356, 9032660, 10000445, 10769710, 14000623, 20000890, 21539420, 28001246, 40001780, 56002492, 70003115, 140006230, 280012460]

約数ペア:

[(1, 280012460), (2, 140006230), (4, 70003115), (5, 56002492), (7, 40001780), (10, 28001246), (13, 21539420), (14, 20000890), (20, 14000623), (26, 10769710), (28, 10000445), (31, 9032660), (35, 8000356), (49, 5714540), (52, 5384855), (62, 4516330), (65, 4307884), (70, 4000178), (91, 3077060), (98, 2857270), (124, 2258165), (130, 2153942), (140, 2000089), (155, 1806532), (182, 1538530), (196, 1428635), (217, 1290380), (245, 1142908), (260, 1076971), (310, 903266), (364, 769265), (403, 694820), (434, 645190), (455, 615412), (490, 571454), (620, 451633), (637, 439580), (709, 394940), (806, 347410), (868, 322595), (910, 307706), (980, 285727), (1085, 258076), (1274, 219790), (1418, 197470), (1519, 184340), (1612, 173705), (1820, 153853), (2015, 138964), (2170, 129038), (2548, 109895), (2821, 99260), (2836, 98735), (3038, 92170), (3185, 87916), (3545, 78988), (4030, 69482), (4340, 64519), (4963, 56420), (5642, 49630), (6076, 46085), (6370, 43958), (7090, 39494), (7595, 36868), (8060, 34741), (9217, 30380), (9926, 28210), (11284, 24815), (12740, 21979), (14105, 19852), (14180, 19747), (15190, 18434)]