21388080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{439}}^1$

素因数の和:491

約数の個数: 160

約数和(自身を含む): 78566400

約数和(自身を除く): 57178320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 35, 40, 42, 48, 56, 58, 60, 70, 80, 84, 87, 105, 112, 116, 120, 140, 145, 168, 174, 203, 210, 232, 240, 280, 290, 336, 348, 406, 420, 435, 439, 464, 560, 580, 609, 696, 812, 840, 870, 878, 1015, 1160, 1218, 1317, 1392, 1624, 1680, 1740, 1756, 2030, 2195, 2320, 2436, 2634, 3045, 3073, 3248, 3480, 3512, 4060, 4390, 4872, 5268, 6090, 6146, 6585, 6960, 7024, 8120, 8780, 9219, 9744, 10536, 12180, 12292, 12731, 13170, 15365, 16240, 17560, 18438, 21072, 24360, 24584, 25462, 26340, 30730, 35120, 36876, 38193, 46095, 48720, 49168, 50924, 52680, 61460, 63655, 73752, 76386, 89117, 92190, 101848, 105360, 122920, 127310, 147504, 152772, 178234, 184380, 190965, 203696, 245840, 254620, 267351, 305544, 356468, 368760, 381930, 445585, 509240, 534702, 611088, 712936, 737520, 763860, 891170, 1018480, 1069404, 1336755, 1425872, 1527720, 1782340, 2138808, 2673510, 3055440, 3564680, 4277616, 5347020, 7129360, 10694040, 21388080]

約数ペア:

[(1, 21388080), (2, 10694040), (3, 7129360), (4, 5347020), (5, 4277616), (6, 3564680), (7, 3055440), (8, 2673510), (10, 2138808), (12, 1782340), (14, 1527720), (15, 1425872), (16, 1336755), (20, 1069404), (21, 1018480), (24, 891170), (28, 763860), (29, 737520), (30, 712936), (35, 611088), (40, 534702), (42, 509240), (48, 445585), (56, 381930), (58, 368760), (60, 356468), (70, 305544), (80, 267351), (84, 254620), (87, 245840), (105, 203696), (112, 190965), (116, 184380), (120, 178234), (140, 152772), (145, 147504), (168, 127310), (174, 122920), (203, 105360), (210, 101848), (232, 92190), (240, 89117), (280, 76386), (290, 73752), (336, 63655), (348, 61460), (406, 52680), (420, 50924), (435, 49168), (439, 48720), (464, 46095), (560, 38193), (580, 36876), (609, 35120), (696, 30730), (812, 26340), (840, 25462), (870, 24584), (878, 24360), (1015, 21072), (1160, 18438), (1218, 17560), (1317, 16240), (1392, 15365), (1624, 13170), (1680, 12731), (1740, 12292), (1756, 12180), (2030, 10536), (2195, 9744), (2320, 9219), (2436, 8780), (2634, 8120), (3045, 7024), (3073, 6960), (3248, 6585), (3480, 6146), (3512, 6090), (4060, 5268), (4390, 4872)]