20419856128

素因数分解:

$2^8\times 7^1\times {\mathrm{47}}^1\times {\mathrm{242447}}^1$

素因数の和:242517

約数の個数: 72

約数和(自身を含む): 47574116352

約数和(自身を除く): 27154260224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 256, 329, 376, 448, 658, 752, 896, 1316, 1504, 1792, 2632, 3008, 5264, 6016, 10528, 12032, 21056, 42112, 84224, 242447, 484894, 969788, 1697129, 1939576, 3394258, 3879152, 6788516, 7758304, 11395009, 13577032, 15516608, 22790018, 27154064, 31033216, 45580036, 54308128, 62066432, 79765063, 91160072, 108616256, 159530126, 182320144, 217232512, 319060252, 364640288, 434465024, 638120504, 729280576, 1276241008, 1458561152, 2552482016, 2917122304, 5104964032, 10209928064, 20419856128]

約数ペア:

[(1, 20419856128), (2, 10209928064), (4, 5104964032), (7, 2917122304), (8, 2552482016), (14, 1458561152), (16, 1276241008), (28, 729280576), (32, 638120504), (47, 434465024), (56, 364640288), (64, 319060252), (94, 217232512), (112, 182320144), (128, 159530126), (188, 108616256), (224, 91160072), (256, 79765063), (329, 62066432), (376, 54308128), (448, 45580036), (658, 31033216), (752, 27154064), (896, 22790018), (1316, 15516608), (1504, 13577032), (1792, 11395009), (2632, 7758304), (3008, 6788516), (5264, 3879152), (6016, 3394258), (10528, 1939576), (12032, 1697129), (21056, 969788), (42112, 484894), (84224, 242447)]