20653440

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:400

約数の個数: 128

約数和(自身を含む): 68152320

約数和(自身を除く): 47498880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 310, 320, 347, 372, 384, 465, 480, 496, 620, 640, 694, 744, 930, 960, 992, 1041, 1240, 1388, 1488, 1735, 1860, 1920, 1984, 2082, 2480, 2776, 2976, 3470, 3720, 3968, 4164, 4960, 5205, 5552, 5952, 6940, 7440, 8328, 9920, 10410, 10757, 11104, 11904, 13880, 14880, 16656, 19840, 20820, 21514, 22208, 27760, 29760, 32271, 33312, 41640, 43028, 44416, 53785, 55520, 59520, 64542, 66624, 83280, 86056, 107570, 111040, 129084, 133248, 161355, 166560, 172112, 215140, 222080, 258168, 322710, 333120, 344224, 430280, 516336, 645420, 666240, 688448, 860560, 1032672, 1290840, 1376896, 1721120, 2065344, 2581680, 3442240, 4130688, 5163360, 6884480, 10326720, 20653440]

約数ペア:

[(1, 20653440), (2, 10326720), (3, 6884480), (4, 5163360), (5, 4130688), (6, 3442240), (8, 2581680), (10, 2065344), (12, 1721120), (15, 1376896), (16, 1290840), (20, 1032672), (24, 860560), (30, 688448), (31, 666240), (32, 645420), (40, 516336), (48, 430280), (60, 344224), (62, 333120), (64, 322710), (80, 258168), (93, 222080), (96, 215140), (120, 172112), (124, 166560), (128, 161355), (155, 133248), (160, 129084), (186, 111040), (192, 107570), (240, 86056), (248, 83280), (310, 66624), (320, 64542), (347, 59520), (372, 55520), (384, 53785), (465, 44416), (480, 43028), (496, 41640), (620, 33312), (640, 32271), (694, 29760), (744, 27760), (930, 22208), (960, 21514), (992, 20820), (1041, 19840), (1240, 16656), (1388, 14880), (1488, 13880), (1735, 11904), (1860, 11104), (1920, 10757), (1984, 10410), (2082, 9920), (2480, 8328), (2776, 7440), (2976, 6940), (3470, 5952), (3720, 5552), (3968, 5205), (4164, 4960)]