128747880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:605

約数の個数: 160

約数和(自身を含む): 439084800

約数和(自身を除く): 310336920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 79, 81, 90, 108, 120, 135, 158, 162, 180, 216, 237, 270, 316, 324, 360, 395, 405, 474, 503, 540, 632, 648, 711, 790, 810, 948, 1006, 1080, 1185, 1422, 1509, 1580, 1620, 1896, 2012, 2133, 2370, 2515, 2844, 3018, 3160, 3240, 3555, 4024, 4266, 4527, 4740, 5030, 5688, 6036, 6399, 7110, 7545, 8532, 9054, 9480, 10060, 10665, 12072, 12798, 13581, 14220, 15090, 17064, 18108, 20120, 21330, 22635, 25596, 27162, 28440, 30180, 31995, 36216, 39737, 40743, 42660, 45270, 51192, 54324, 60360, 63990, 67905, 79474, 81486, 85320, 90540, 108648, 119211, 127980, 135810, 158948, 162972, 181080, 198685, 203715, 238422, 255960, 271620, 317896, 325944, 357633, 397370, 407430, 476844, 543240, 596055, 715266, 794740, 814860, 953688, 1072899, 1192110, 1430532, 1589480, 1629720, 1788165, 2145798, 2384220, 2861064, 3218697, 3576330, 4291596, 4768440, 5364495, 6437394, 7152660, 8583192, 10728990, 12874788, 14305320, 16093485, 21457980, 25749576, 32186970, 42915960, 64373940, 128747880]

約数ペア:

[(1, 128747880), (2, 64373940), (3, 42915960), (4, 32186970), (5, 25749576), (6, 21457980), (8, 16093485), (9, 14305320), (10, 12874788), (12, 10728990), (15, 8583192), (18, 7152660), (20, 6437394), (24, 5364495), (27, 4768440), (30, 4291596), (36, 3576330), (40, 3218697), (45, 2861064), (54, 2384220), (60, 2145798), (72, 1788165), (79, 1629720), (81, 1589480), (90, 1430532), (108, 1192110), (120, 1072899), (135, 953688), (158, 814860), (162, 794740), (180, 715266), (216, 596055), (237, 543240), (270, 476844), (316, 407430), (324, 397370), (360, 357633), (395, 325944), (405, 317896), (474, 271620), (503, 255960), (540, 238422), (632, 203715), (648, 198685), (711, 181080), (790, 162972), (810, 158948), (948, 135810), (1006, 127980), (1080, 119211), (1185, 108648), (1422, 90540), (1509, 85320), (1580, 81486), (1620, 79474), (1896, 67905), (2012, 63990), (2133, 60360), (2370, 54324), (2515, 51192), (2844, 45270), (3018, 42660), (3160, 40743), (3240, 39737), (3555, 36216), (4024, 31995), (4266, 30180), (4527, 28440), (4740, 27162), (5030, 25596), (5688, 22635), (6036, 21330), (6399, 20120), (7110, 18108), (7545, 17064), (8532, 15090), (9054, 14220), (9480, 13581), (10060, 12798), (10665, 12072)]