127680320

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 112

約数和(自身を含む): 320503296

約数和(自身を除く): 192822976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 155, 160, 211, 244, 248, 305, 310, 320, 422, 488, 496, 610, 620, 844, 976, 992, 1055, 1220, 1240, 1688, 1891, 1952, 1984, 2110, 2440, 2480, 3376, 3782, 3904, 4220, 4880, 4960, 6541, 6752, 7564, 8440, 9455, 9760, 9920, 12871, 13082, 13504, 15128, 16880, 18910, 19520, 25742, 26164, 30256, 32705, 33760, 37820, 51484, 52328, 60512, 64355, 65410, 67520, 75640, 102968, 104656, 121024, 128710, 130820, 151280, 205936, 209312, 257420, 261640, 302560, 399001, 411872, 418624, 514840, 523280, 605120, 798002, 823744, 1029680, 1046560, 1596004, 1995005, 2059360, 2093120, 3192008, 3990010, 4118720, 6384016, 7980020, 12768032, 15960040, 25536064, 31920080, 63840160, 127680320]

約数ペア:

[(1, 127680320), (2, 63840160), (4, 31920080), (5, 25536064), (8, 15960040), (10, 12768032), (16, 7980020), (20, 6384016), (31, 4118720), (32, 3990010), (40, 3192008), (61, 2093120), (62, 2059360), (64, 1995005), (80, 1596004), (122, 1046560), (124, 1029680), (155, 823744), (160, 798002), (211, 605120), (244, 523280), (248, 514840), (305, 418624), (310, 411872), (320, 399001), (422, 302560), (488, 261640), (496, 257420), (610, 209312), (620, 205936), (844, 151280), (976, 130820), (992, 128710), (1055, 121024), (1220, 104656), (1240, 102968), (1688, 75640), (1891, 67520), (1952, 65410), (1984, 64355), (2110, 60512), (2440, 52328), (2480, 51484), (3376, 37820), (3782, 33760), (3904, 32705), (4220, 30256), (4880, 26164), (4960, 25742), (6541, 19520), (6752, 18910), (7564, 16880), (8440, 15128), (9455, 13504), (9760, 13082), (9920, 12871)]