639296320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{643}}^1$

素因数の和:912

約数の個数: 112

約数和(自身を含む): 1648846080

約数和(自身を除く): 1009549760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 239, 260, 320, 416, 478, 520, 643, 832, 956, 1040, 1195, 1286, 1912, 2080, 2390, 2572, 3107, 3215, 3824, 4160, 4780, 5144, 6214, 6430, 7648, 8359, 9560, 10288, 12428, 12860, 15296, 15535, 16718, 19120, 20576, 24856, 25720, 31070, 33436, 38240, 41152, 41795, 49712, 51440, 62140, 66872, 76480, 83590, 99424, 102880, 124280, 133744, 153677, 167180, 198848, 205760, 248560, 267488, 307354, 334360, 497120, 534976, 614708, 668720, 768385, 994240, 1229416, 1337440, 1536770, 1997801, 2458832, 2674880, 3073540, 3995602, 4917664, 6147080, 7991204, 9835328, 9989005, 12294160, 15982408, 19978010, 24588320, 31964816, 39956020, 49176640, 63929632, 79912040, 127859264, 159824080, 319648160, 639296320]

約数ペア:

[(1, 639296320), (2, 319648160), (4, 159824080), (5, 127859264), (8, 79912040), (10, 63929632), (13, 49176640), (16, 39956020), (20, 31964816), (26, 24588320), (32, 19978010), (40, 15982408), (52, 12294160), (64, 9989005), (65, 9835328), (80, 7991204), (104, 6147080), (130, 4917664), (160, 3995602), (208, 3073540), (239, 2674880), (260, 2458832), (320, 1997801), (416, 1536770), (478, 1337440), (520, 1229416), (643, 994240), (832, 768385), (956, 668720), (1040, 614708), (1195, 534976), (1286, 497120), (1912, 334360), (2080, 307354), (2390, 267488), (2572, 248560), (3107, 205760), (3215, 198848), (3824, 167180), (4160, 153677), (4780, 133744), (5144, 124280), (6214, 102880), (6430, 99424), (7648, 83590), (8359, 76480), (9560, 66872), (10288, 62140), (12428, 51440), (12860, 49712), (15296, 41795), (15535, 41152), (16718, 38240), (19120, 33436), (20576, 31070), (24856, 25720)]