19877880

素因数分解:

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

素因数の和:110

約数の個数: 144

約数和(自身を含む): 67367160

約数和(自身を除く): 47489280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 37, 40, 44, 55, 60, 66, 74, 88, 110, 111, 120, 121, 132, 148, 165, 185, 220, 222, 242, 264, 296, 330, 363, 370, 407, 440, 444, 484, 555, 605, 660, 726, 740, 814, 888, 968, 1110, 1210, 1221, 1320, 1369, 1452, 1480, 1628, 1815, 2035, 2220, 2420, 2442, 2738, 2904, 3256, 3630, 4070, 4107, 4440, 4477, 4840, 4884, 5476, 6105, 6845, 7260, 8140, 8214, 8954, 9768, 10952, 12210, 13431, 13690, 14520, 15059, 16280, 16428, 17908, 20535, 22385, 24420, 26862, 27380, 30118, 32856, 35816, 41070, 44770, 45177, 48840, 53724, 54760, 60236, 67155, 75295, 82140, 89540, 90354, 107448, 120472, 134310, 150590, 164280, 165649, 179080, 180708, 225885, 268620, 301180, 331298, 361416, 451770, 496947, 537240, 602360, 662596, 828245, 903540, 993894, 1325192, 1656490, 1807080, 1987788, 2484735, 3312980, 3975576, 4969470, 6625960, 9938940, 19877880]

約数ペア:

[(1, 19877880), (2, 9938940), (3, 6625960), (4, 4969470), (5, 3975576), (6, 3312980), (8, 2484735), (10, 1987788), (11, 1807080), (12, 1656490), (15, 1325192), (20, 993894), (22, 903540), (24, 828245), (30, 662596), (33, 602360), (37, 537240), (40, 496947), (44, 451770), (55, 361416), (60, 331298), (66, 301180), (74, 268620), (88, 225885), (110, 180708), (111, 179080), (120, 165649), (121, 164280), (132, 150590), (148, 134310), (165, 120472), (185, 107448), (220, 90354), (222, 89540), (242, 82140), (264, 75295), (296, 67155), (330, 60236), (363, 54760), (370, 53724), (407, 48840), (440, 45177), (444, 44770), (484, 41070), (555, 35816), (605, 32856), (660, 30118), (726, 27380), (740, 26862), (814, 24420), (888, 22385), (968, 20535), (1110, 17908), (1210, 16428), (1221, 16280), (1320, 15059), (1369, 14520), (1452, 13690), (1480, 13431), (1628, 12210), (1815, 10952), (2035, 9768), (2220, 8954), (2420, 8214), (2442, 8140), (2738, 7260), (2904, 6845), (3256, 6105), (3630, 5476), (4070, 4884), (4107, 4840), (4440, 4477)]