257817420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{29231}}^1$

素因数の和:29260

約数の個数: 108

約数和(自身を含む): 909758304

約数和(自身を除く): 651940884

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, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 29231, 58462, 87693, 116924, 146155, 175386, 204617, 263079, 292310, 350772, 409234, 438465, 526158, 584620, 613851, 818468, 876930, 1023085, 1052316, 1227702, 1315395, 1432319, 1753860, 1841553, 2046170, 2455404, 2630790, 2864638, 3069255, 3683106, 4092340, 4296957, 5261580, 5729276, 6138510, 7161595, 7366212, 8593914, 9207765, 12277020, 12890871, 14323190, 17187828, 18415530, 21484785, 25781742, 28646380, 36831060, 42969570, 51563484, 64454355, 85939140, 128908710, 257817420]

約数ペア:

[(1, 257817420), (2, 128908710), (3, 85939140), (4, 64454355), (5, 51563484), (6, 42969570), (7, 36831060), (9, 28646380), (10, 25781742), (12, 21484785), (14, 18415530), (15, 17187828), (18, 14323190), (20, 12890871), (21, 12277020), (28, 9207765), (30, 8593914), (35, 7366212), (36, 7161595), (42, 6138510), (45, 5729276), (49, 5261580), (60, 4296957), (63, 4092340), (70, 3683106), (84, 3069255), (90, 2864638), (98, 2630790), (105, 2455404), (126, 2046170), (140, 1841553), (147, 1753860), (180, 1432319), (196, 1315395), (210, 1227702), (245, 1052316), (252, 1023085), (294, 876930), (315, 818468), (420, 613851), (441, 584620), (490, 526158), (588, 438465), (630, 409234), (735, 350772), (882, 292310), (980, 263079), (1260, 204617), (1470, 175386), (1764, 146155), (2205, 116924), (2940, 87693), (4410, 58462), (8820, 29231)]