19968480

素因数分解:

$2^5\times 3^2\times 5^1\times 7^2\times {\mathrm{283}}^1$

素因数の和:318

約数の個数: 216

約数和(自身を含む): 79547832

約数和(自身を除く): 59579352

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 196, 210, 224, 240, 245, 252, 280, 283, 288, 294, 315, 336, 360, 392, 420, 441, 480, 490, 504, 560, 566, 588, 630, 672, 720, 735, 784, 840, 849, 882, 980, 1008, 1120, 1132, 1176, 1260, 1415, 1440, 1470, 1568, 1680, 1698, 1764, 1960, 1981, 2016, 2205, 2264, 2352, 2520, 2547, 2830, 2940, 3360, 3396, 3528, 3920, 3962, 4245, 4410, 4528, 4704, 5040, 5094, 5660, 5880, 5943, 6792, 7056, 7840, 7924, 8490, 8820, 9056, 9905, 10080, 10188, 11320, 11760, 11886, 12735, 13584, 13867, 14112, 15848, 16980, 17640, 17829, 19810, 20376, 22640, 23520, 23772, 25470, 27168, 27734, 29715, 31696, 33960, 35280, 35658, 39620, 40752, 41601, 45280, 47544, 50940, 55468, 59430, 63392, 67920, 69335, 70560, 71316, 79240, 81504, 83202, 89145, 95088, 101880, 110936, 118860, 124803, 135840, 138670, 142632, 158480, 166404, 178290, 190176, 203760, 208005, 221872, 237720, 249606, 277340, 285264, 316960, 332808, 356580, 407520, 416010, 443744, 475440, 499212, 554680, 570528, 624015, 665616, 713160, 832020, 950880, 998424, 1109360, 1248030, 1331232, 1426320, 1664040, 1996848, 2218720, 2496060, 2852640, 3328080, 3993696, 4992120, 6656160, 9984240, 19968480]

約数ペア:

[(1, 19968480), (2, 9984240), (3, 6656160), (4, 4992120), (5, 3993696), (6, 3328080), (7, 2852640), (8, 2496060), (9, 2218720), (10, 1996848), (12, 1664040), (14, 1426320), (15, 1331232), (16, 1248030), (18, 1109360), (20, 998424), (21, 950880), (24, 832020), (28, 713160), (30, 665616), (32, 624015), (35, 570528), (36, 554680), (40, 499212), (42, 475440), (45, 443744), (48, 416010), (49, 407520), (56, 356580), (60, 332808), (63, 316960), (70, 285264), (72, 277340), (80, 249606), (84, 237720), (90, 221872), (96, 208005), (98, 203760), (105, 190176), (112, 178290), (120, 166404), (126, 158480), (140, 142632), (144, 138670), (147, 135840), (160, 124803), (168, 118860), (180, 110936), (196, 101880), (210, 95088), (224, 89145), (240, 83202), (245, 81504), (252, 79240), (280, 71316), (283, 70560), (288, 69335), (294, 67920), (315, 63392), (336, 59430), (360, 55468), (392, 50940), (420, 47544), (441, 45280), (480, 41601), (490, 40752), (504, 39620), (560, 35658), (566, 35280), (588, 33960), (630, 31696), (672, 29715), (720, 27734), (735, 27168), (784, 25470), (840, 23772), (849, 23520), (882, 22640), (980, 20376), (1008, 19810), (1120, 17829), (1132, 17640), (1176, 16980), (1260, 15848), (1415, 14112), (1440, 13867), (1470, 13584), (1568, 12735), (1680, 11886), (1698, 11760), (1764, 11320), (1960, 10188), (1981, 10080), (2016, 9905), (2205, 9056), (2264, 8820), (2352, 8490), (2520, 7924), (2547, 7840), (2830, 7056), (2940, 6792), (3360, 5943), (3396, 5880), (3528, 5660), (3920, 5094), (3962, 5040), (4245, 4704), (4410, 4528)]