157681120

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2060

約数の個数: 96

約数和(自身を含む): 408240000

約数和(自身を除く): 250558880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 68, 80, 85, 116, 136, 145, 160, 170, 232, 272, 290, 340, 464, 493, 544, 580, 680, 928, 986, 1160, 1360, 1972, 1999, 2320, 2465, 2720, 3944, 3998, 4640, 4930, 7888, 7996, 9860, 9995, 15776, 15992, 19720, 19990, 31984, 33983, 39440, 39980, 57971, 63968, 67966, 78880, 79960, 115942, 135932, 159920, 169915, 231884, 271864, 289855, 319840, 339830, 463768, 543728, 579710, 679660, 927536, 985507, 1087456, 1159420, 1359320, 1855072, 1971014, 2318840, 2718640, 3942028, 4637680, 4927535, 5437280, 7884056, 9275360, 9855070, 15768112, 19710140, 31536224, 39420280, 78840560, 157681120]

約数ペア:

[(1, 157681120), (2, 78840560), (4, 39420280), (5, 31536224), (8, 19710140), (10, 15768112), (16, 9855070), (17, 9275360), (20, 7884056), (29, 5437280), (32, 4927535), (34, 4637680), (40, 3942028), (58, 2718640), (68, 2318840), (80, 1971014), (85, 1855072), (116, 1359320), (136, 1159420), (145, 1087456), (160, 985507), (170, 927536), (232, 679660), (272, 579710), (290, 543728), (340, 463768), (464, 339830), (493, 319840), (544, 289855), (580, 271864), (680, 231884), (928, 169915), (986, 159920), (1160, 135932), (1360, 115942), (1972, 79960), (1999, 78880), (2320, 67966), (2465, 63968), (2720, 57971), (3944, 39980), (3998, 39440), (4640, 33983), (4930, 31984), (7888, 19990), (7996, 19720), (9860, 15992), (9995, 15776)]