20120681728

素因数分解:

$2^8\times 7^1\times {\mathrm{691}}^1\times {\mathrm{16249}}^1$

素因数の和:16963

約数の個数: 72

約数和(自身を含む): 45969560000

約数和(自身を除く): 25848878272

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 691, 896, 1382, 1792, 2764, 4837, 5528, 9674, 11056, 16249, 19348, 22112, 32498, 38696, 44224, 64996, 77392, 88448, 113743, 129992, 154784, 176896, 227486, 259984, 309568, 454972, 519968, 619136, 909944, 1039936, 1238272, 1819888, 2079872, 3639776, 4159744, 7279552, 11228059, 14559104, 22456118, 29118208, 44912236, 78596413, 89824472, 157192826, 179648944, 314385652, 359297888, 628771304, 718595776, 1257542608, 1437191552, 2515085216, 2874383104, 5030170432, 10060340864, 20120681728]

約数ペア:

[(1, 20120681728), (2, 10060340864), (4, 5030170432), (7, 2874383104), (8, 2515085216), (14, 1437191552), (16, 1257542608), (28, 718595776), (32, 628771304), (56, 359297888), (64, 314385652), (112, 179648944), (128, 157192826), (224, 89824472), (256, 78596413), (448, 44912236), (691, 29118208), (896, 22456118), (1382, 14559104), (1792, 11228059), (2764, 7279552), (4837, 4159744), (5528, 3639776), (9674, 2079872), (11056, 1819888), (16249, 1238272), (19348, 1039936), (22112, 909944), (32498, 619136), (38696, 519968), (44224, 454972), (64996, 309568), (77392, 259984), (88448, 227486), (113743, 176896), (129992, 154784)]