20504800

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:129

約数の個数: 108

約数和(自身を含む): 53574696

約数和(自身を除く): 33069896

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 71, 76, 80, 95, 100, 142, 152, 160, 190, 200, 284, 304, 355, 361, 380, 400, 475, 568, 608, 710, 722, 760, 800, 950, 1136, 1349, 1420, 1444, 1520, 1775, 1805, 1900, 2272, 2698, 2840, 2888, 3040, 3550, 3610, 3800, 5396, 5680, 5776, 6745, 7100, 7220, 7600, 9025, 10792, 11360, 11552, 13490, 14200, 14440, 15200, 18050, 21584, 25631, 26980, 28400, 28880, 33725, 36100, 43168, 51262, 53960, 56800, 57760, 67450, 72200, 102524, 107920, 128155, 134900, 144400, 205048, 215840, 256310, 269800, 288800, 410096, 512620, 539600, 640775, 820192, 1025240, 1079200, 1281550, 2050480, 2563100, 4100960, 5126200, 10252400, 20504800]

約数ペア:

[(1, 20504800), (2, 10252400), (4, 5126200), (5, 4100960), (8, 2563100), (10, 2050480), (16, 1281550), (19, 1079200), (20, 1025240), (25, 820192), (32, 640775), (38, 539600), (40, 512620), (50, 410096), (71, 288800), (76, 269800), (80, 256310), (95, 215840), (100, 205048), (142, 144400), (152, 134900), (160, 128155), (190, 107920), (200, 102524), (284, 72200), (304, 67450), (355, 57760), (361, 56800), (380, 53960), (400, 51262), (475, 43168), (568, 36100), (608, 33725), (710, 28880), (722, 28400), (760, 26980), (800, 25631), (950, 21584), (1136, 18050), (1349, 15200), (1420, 14440), (1444, 14200), (1520, 13490), (1775, 11552), (1805, 11360), (1900, 10792), (2272, 9025), (2698, 7600), (2840, 7220), (2888, 7100), (3040, 6745), (3550, 5776), (3610, 5680), (3800, 5396)]