20191600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:395

約数の個数: 120

約数和(自身を含む): 57152592

約数和(自身を除く): 36960992

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 176, 200, 208, 220, 260, 275, 286, 325, 353, 400, 440, 520, 550, 572, 650, 706, 715, 880, 1040, 1100, 1144, 1300, 1412, 1430, 1765, 2200, 2288, 2600, 2824, 2860, 3530, 3575, 3883, 4400, 4589, 5200, 5648, 5720, 7060, 7150, 7766, 8825, 9178, 11440, 14120, 14300, 15532, 17650, 18356, 19415, 22945, 28240, 28600, 31064, 35300, 36712, 38830, 45890, 50479, 57200, 62128, 70600, 73424, 77660, 91780, 97075, 100958, 114725, 141200, 155320, 183560, 194150, 201916, 229450, 252395, 310640, 367120, 388300, 403832, 458900, 504790, 776600, 807664, 917800, 1009580, 1261975, 1553200, 1835600, 2019160, 2523950, 4038320, 5047900, 10095800, 20191600]

約数ペア:

[(1, 20191600), (2, 10095800), (4, 5047900), (5, 4038320), (8, 2523950), (10, 2019160), (11, 1835600), (13, 1553200), (16, 1261975), (20, 1009580), (22, 917800), (25, 807664), (26, 776600), (40, 504790), (44, 458900), (50, 403832), (52, 388300), (55, 367120), (65, 310640), (80, 252395), (88, 229450), (100, 201916), (104, 194150), (110, 183560), (130, 155320), (143, 141200), (176, 114725), (200, 100958), (208, 97075), (220, 91780), (260, 77660), (275, 73424), (286, 70600), (325, 62128), (353, 57200), (400, 50479), (440, 45890), (520, 38830), (550, 36712), (572, 35300), (650, 31064), (706, 28600), (715, 28240), (880, 22945), (1040, 19415), (1100, 18356), (1144, 17650), (1300, 15532), (1412, 14300), (1430, 14120), (1765, 11440), (2200, 9178), (2288, 8825), (2600, 7766), (2824, 7150), (2860, 7060), (3530, 5720), (3575, 5648), (3883, 5200), (4400, 4589)]