205404760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 538937280

約数和(自身を除く): 333532520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 37, 40, 44, 55, 62, 74, 88, 110, 121, 124, 148, 155, 185, 220, 242, 248, 296, 310, 341, 370, 407, 440, 484, 605, 620, 682, 740, 814, 968, 1147, 1210, 1240, 1364, 1369, 1480, 1628, 1705, 2035, 2294, 2420, 2728, 2738, 3256, 3410, 3751, 4070, 4477, 4588, 4840, 5476, 5735, 6820, 6845, 7502, 8140, 8954, 9176, 10952, 11470, 12617, 13640, 13690, 15004, 15059, 16280, 17908, 18755, 22385, 22940, 25234, 27380, 30008, 30118, 35816, 37510, 42439, 44770, 45880, 50468, 54760, 60236, 63085, 75020, 75295, 84878, 89540, 100936, 120472, 126170, 138787, 150040, 150590, 165649, 169756, 179080, 212195, 252340, 277574, 301180, 331298, 339512, 424390, 466829, 504680, 555148, 602360, 662596, 693935, 828245, 848780, 933658, 1110296, 1325192, 1387870, 1656490, 1697560, 1867316, 2334145, 2775740, 3312980, 3734632, 4668290, 5135119, 5551480, 6625960, 9336580, 10270238, 18673160, 20540476, 25675595, 41080952, 51351190, 102702380, 205404760]

約数ペア:

[(1, 205404760), (2, 102702380), (4, 51351190), (5, 41080952), (8, 25675595), (10, 20540476), (11, 18673160), (20, 10270238), (22, 9336580), (31, 6625960), (37, 5551480), (40, 5135119), (44, 4668290), (55, 3734632), (62, 3312980), (74, 2775740), (88, 2334145), (110, 1867316), (121, 1697560), (124, 1656490), (148, 1387870), (155, 1325192), (185, 1110296), (220, 933658), (242, 848780), (248, 828245), (296, 693935), (310, 662596), (341, 602360), (370, 555148), (407, 504680), (440, 466829), (484, 424390), (605, 339512), (620, 331298), (682, 301180), (740, 277574), (814, 252340), (968, 212195), (1147, 179080), (1210, 169756), (1240, 165649), (1364, 150590), (1369, 150040), (1480, 138787), (1628, 126170), (1705, 120472), (2035, 100936), (2294, 89540), (2420, 84878), (2728, 75295), (2738, 75020), (3256, 63085), (3410, 60236), (3751, 54760), (4070, 50468), (4477, 45880), (4588, 44770), (4840, 42439), (5476, 37510), (5735, 35816), (6820, 30118), (6845, 30008), (7502, 27380), (8140, 25234), (8954, 22940), (9176, 22385), (10952, 18755), (11470, 17908), (12617, 16280), (13640, 15059), (13690, 15004)]