20120724080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1\times {\mathrm{9497}}^1$

素因数の和:9954

約数の個数: 80

約数和(自身を含む): 47571758784

約数和(自身を除く): 27451034704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 373, 568, 710, 746, 1136, 1420, 1492, 1865, 2840, 2984, 3730, 5680, 5968, 7460, 9497, 14920, 18994, 26483, 29840, 37988, 47485, 52966, 75976, 94970, 105932, 132415, 151952, 189940, 211864, 264830, 379880, 423728, 529660, 674287, 759760, 1059320, 1348574, 2118640, 2697148, 3371435, 3542381, 5394296, 6742870, 7084762, 10788592, 13485740, 14169524, 17711905, 26971480, 28339048, 35423810, 53942960, 56678096, 70847620, 141695240, 251509051, 283390480, 503018102, 1006036204, 1257545255, 2012072408, 2515090510, 4024144816, 5030181020, 10060362040, 20120724080]

約数ペア:

[(1, 20120724080), (2, 10060362040), (4, 5030181020), (5, 4024144816), (8, 2515090510), (10, 2012072408), (16, 1257545255), (20, 1006036204), (40, 503018102), (71, 283390480), (80, 251509051), (142, 141695240), (284, 70847620), (355, 56678096), (373, 53942960), (568, 35423810), (710, 28339048), (746, 26971480), (1136, 17711905), (1420, 14169524), (1492, 13485740), (1865, 10788592), (2840, 7084762), (2984, 6742870), (3730, 5394296), (5680, 3542381), (5968, 3371435), (7460, 2697148), (9497, 2118640), (14920, 1348574), (18994, 1059320), (26483, 759760), (29840, 674287), (37988, 529660), (47485, 423728), (52966, 379880), (75976, 264830), (94970, 211864), (105932, 189940), (132415, 151952)]