20346920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 50466240

約数和(自身を除く): 30119320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 131, 220, 262, 353, 440, 524, 655, 706, 1048, 1310, 1412, 1441, 1765, 2620, 2824, 2882, 3530, 3883, 5240, 5764, 7060, 7205, 7766, 11528, 14120, 14410, 15532, 19415, 28820, 31064, 38830, 46243, 57640, 77660, 92486, 155320, 184972, 231215, 369944, 462430, 508673, 924860, 1017346, 1849720, 2034692, 2543365, 4069384, 5086730, 10173460, 20346920]

約数ペア:

[(1, 20346920), (2, 10173460), (4, 5086730), (5, 4069384), (8, 2543365), (10, 2034692), (11, 1849720), (20, 1017346), (22, 924860), (40, 508673), (44, 462430), (55, 369944), (88, 231215), (110, 184972), (131, 155320), (220, 92486), (262, 77660), (353, 57640), (440, 46243), (524, 38830), (655, 31064), (706, 28820), (1048, 19415), (1310, 15532), (1412, 14410), (1441, 14120), (1765, 11528), (2620, 7766), (2824, 7205), (2882, 7060), (3530, 5764), (3883, 5240)]