19701120

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 128

約数和(自身を含む): 65018880

約数和(自身を除く): 45317760

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, 331, 372, 384, 465, 480, 496, 620, 640, 662, 744, 930, 960, 992, 993, 1240, 1324, 1488, 1655, 1860, 1920, 1984, 1986, 2480, 2648, 2976, 3310, 3720, 3968, 3972, 4960, 4965, 5296, 5952, 6620, 7440, 7944, 9920, 9930, 10261, 10592, 11904, 13240, 14880, 15888, 19840, 19860, 20522, 21184, 26480, 29760, 30783, 31776, 39720, 41044, 42368, 51305, 52960, 59520, 61566, 63552, 79440, 82088, 102610, 105920, 123132, 127104, 153915, 158880, 164176, 205220, 211840, 246264, 307830, 317760, 328352, 410440, 492528, 615660, 635520, 656704, 820880, 985056, 1231320, 1313408, 1641760, 1970112, 2462640, 3283520, 3940224, 4925280, 6567040, 9850560, 19701120]

約数ペア:

[(1, 19701120), (2, 9850560), (3, 6567040), (4, 4925280), (5, 3940224), (6, 3283520), (8, 2462640), (10, 1970112), (12, 1641760), (15, 1313408), (16, 1231320), (20, 985056), (24, 820880), (30, 656704), (31, 635520), (32, 615660), (40, 492528), (48, 410440), (60, 328352), (62, 317760), (64, 307830), (80, 246264), (93, 211840), (96, 205220), (120, 164176), (124, 158880), (128, 153915), (155, 127104), (160, 123132), (186, 105920), (192, 102610), (240, 82088), (248, 79440), (310, 63552), (320, 61566), (331, 59520), (372, 52960), (384, 51305), (465, 42368), (480, 41044), (496, 39720), (620, 31776), (640, 30783), (662, 29760), (744, 26480), (930, 21184), (960, 20522), (992, 19860), (993, 19840), (1240, 15888), (1324, 14880), (1488, 13240), (1655, 11904), (1860, 10592), (1920, 10261), (1984, 9930), (1986, 9920), (2480, 7944), (2648, 7440), (2976, 6620), (3310, 5952), (3720, 5296), (3968, 4965), (3972, 4960)]