21870240

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:331

約数の個数: 192

約数和(自身を含む): 82446336

約数和(自身を除く): 60576096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 138, 140, 160, 161, 168, 184, 210, 224, 230, 240, 276, 280, 283, 322, 336, 345, 368, 420, 460, 480, 483, 552, 560, 566, 644, 672, 690, 736, 805, 840, 849, 920, 966, 1104, 1120, 1132, 1288, 1380, 1415, 1610, 1680, 1698, 1840, 1932, 1981, 2208, 2264, 2415, 2576, 2760, 2830, 3220, 3360, 3396, 3680, 3864, 3962, 4245, 4528, 4830, 5152, 5520, 5660, 5943, 6440, 6509, 6792, 7728, 7924, 8490, 9056, 9660, 9905, 11040, 11320, 11886, 12880, 13018, 13584, 15456, 15848, 16980, 19320, 19527, 19810, 22640, 23772, 25760, 26036, 27168, 29715, 31696, 32545, 33960, 38640, 39054, 39620, 45280, 45563, 47544, 52072, 59430, 63392, 65090, 67920, 77280, 78108, 79240, 91126, 95088, 97635, 104144, 118860, 130180, 135840, 136689, 156216, 158480, 182252, 190176, 195270, 208288, 227815, 237720, 260360, 273378, 312432, 316960, 364504, 390540, 455630, 475440, 520720, 546756, 624864, 683445, 729008, 781080, 911260, 950880, 1041440, 1093512, 1366890, 1458016, 1562160, 1822520, 2187024, 2733780, 3124320, 3645040, 4374048, 5467560, 7290080, 10935120, 21870240]

約数ペア:

[(1, 21870240), (2, 10935120), (3, 7290080), (4, 5467560), (5, 4374048), (6, 3645040), (7, 3124320), (8, 2733780), (10, 2187024), (12, 1822520), (14, 1562160), (15, 1458016), (16, 1366890), (20, 1093512), (21, 1041440), (23, 950880), (24, 911260), (28, 781080), (30, 729008), (32, 683445), (35, 624864), (40, 546756), (42, 520720), (46, 475440), (48, 455630), (56, 390540), (60, 364504), (69, 316960), (70, 312432), (80, 273378), (84, 260360), (92, 237720), (96, 227815), (105, 208288), (112, 195270), (115, 190176), (120, 182252), (138, 158480), (140, 156216), (160, 136689), (161, 135840), (168, 130180), (184, 118860), (210, 104144), (224, 97635), (230, 95088), (240, 91126), (276, 79240), (280, 78108), (283, 77280), (322, 67920), (336, 65090), (345, 63392), (368, 59430), (420, 52072), (460, 47544), (480, 45563), (483, 45280), (552, 39620), (560, 39054), (566, 38640), (644, 33960), (672, 32545), (690, 31696), (736, 29715), (805, 27168), (840, 26036), (849, 25760), (920, 23772), (966, 22640), (1104, 19810), (1120, 19527), (1132, 19320), (1288, 16980), (1380, 15848), (1415, 15456), (1610, 13584), (1680, 13018), (1698, 12880), (1840, 11886), (1932, 11320), (1981, 11040), (2208, 9905), (2264, 9660), (2415, 9056), (2576, 8490), (2760, 7924), (2830, 7728), (3220, 6792), (3360, 6509), (3396, 6440), (3680, 5943), (3864, 5660), (3962, 5520), (4245, 5152), (4528, 4830)]