20128786100

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{463}}^1\times {\mathrm{7127}}^1$

素因数の和:7665

約数の個数: 72

約数和(自身を含む): 44497651968

約数和(自身を除く): 24368865868

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 463, 610, 926, 1220, 1525, 1852, 2315, 3050, 4630, 6100, 7127, 9260, 11575, 14254, 23150, 28243, 28508, 35635, 46300, 56486, 71270, 112972, 141215, 142540, 178175, 282430, 356350, 434747, 564860, 706075, 712700, 869494, 1412150, 1738988, 2173735, 2824300, 3299801, 4347470, 6599602, 8694940, 10868675, 13199204, 16499005, 21737350, 32998010, 43474700, 65996020, 82495025, 164990050, 201287861, 329980100, 402575722, 805151444, 1006439305, 2012878610, 4025757220, 5032196525, 10064393050, 20128786100]

約数ペア:

[(1, 20128786100), (2, 10064393050), (4, 5032196525), (5, 4025757220), (10, 2012878610), (20, 1006439305), (25, 805151444), (50, 402575722), (61, 329980100), (100, 201287861), (122, 164990050), (244, 82495025), (305, 65996020), (463, 43474700), (610, 32998010), (926, 21737350), (1220, 16499005), (1525, 13199204), (1852, 10868675), (2315, 8694940), (3050, 6599602), (4630, 4347470), (6100, 3299801), (7127, 2824300), (9260, 2173735), (11575, 1738988), (14254, 1412150), (23150, 869494), (28243, 712700), (28508, 706075), (35635, 564860), (46300, 434747), (56486, 356350), (71270, 282430), (112972, 178175), (141215, 142540)]