138810560

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2054

約数の個数: 112

約数和(自身を含む): 390144000

約数和(自身を除く): 251333440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 868, 992, 1085, 1120, 1240, 1736, 1984, 1999, 2170, 2240, 2480, 3472, 3998, 4340, 4960, 6944, 7996, 8680, 9920, 9995, 13888, 13993, 15992, 17360, 19990, 27986, 31984, 34720, 39980, 55972, 61969, 63968, 69440, 69965, 79960, 111944, 123938, 127936, 139930, 159920, 223888, 247876, 279860, 309845, 319840, 433783, 447776, 495752, 559720, 619690, 639680, 867566, 895552, 991504, 1119440, 1239380, 1735132, 1983008, 2168915, 2238880, 2478760, 3470264, 3966016, 4337830, 4477760, 4957520, 6940528, 8675660, 9915040, 13881056, 17351320, 19830080, 27762112, 34702640, 69405280, 138810560]

約数ペア:

[(1, 138810560), (2, 69405280), (4, 34702640), (5, 27762112), (7, 19830080), (8, 17351320), (10, 13881056), (14, 9915040), (16, 8675660), (20, 6940528), (28, 4957520), (31, 4477760), (32, 4337830), (35, 3966016), (40, 3470264), (56, 2478760), (62, 2238880), (64, 2168915), (70, 1983008), (80, 1735132), (112, 1239380), (124, 1119440), (140, 991504), (155, 895552), (160, 867566), (217, 639680), (224, 619690), (248, 559720), (280, 495752), (310, 447776), (320, 433783), (434, 319840), (448, 309845), (496, 279860), (560, 247876), (620, 223888), (868, 159920), (992, 139930), (1085, 127936), (1120, 123938), (1240, 111944), (1736, 79960), (1984, 69965), (1999, 69440), (2170, 63968), (2240, 61969), (2480, 55972), (3472, 39980), (3998, 34720), (4340, 31984), (4960, 27986), (6944, 19990), (7996, 17360), (8680, 15992), (9920, 13993), (9995, 13888)]