20128435540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{509}}^1\times {\mathrm{1087}}^1$

素因数の和:1729

約数の個数: 96

約数和(自身を含む): 45304842240

約数和(自身を除く): 25176406700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 107, 170, 214, 340, 428, 509, 535, 1018, 1070, 1087, 1819, 2036, 2140, 2174, 2545, 3638, 4348, 5090, 5435, 7276, 8653, 9095, 10180, 10870, 17306, 18190, 18479, 21740, 34612, 36380, 36958, 43265, 54463, 73916, 86530, 92395, 108926, 116309, 173060, 184790, 217852, 232618, 272315, 369580, 465236, 544630, 553283, 581545, 925871, 1089260, 1106566, 1163090, 1851742, 1977253, 2213132, 2326180, 2766415, 3703484, 3954506, 4629355, 5532830, 7909012, 9258710, 9405811, 9886265, 11065660, 18517420, 18811622, 19772530, 37623244, 39545060, 47029055, 59201281, 94058110, 118402562, 188116220, 236805124, 296006405, 592012810, 1006421777, 1184025620, 2012843554, 4025687108, 5032108885, 10064217770, 20128435540]

約数ペア:

[(1, 20128435540), (2, 10064217770), (4, 5032108885), (5, 4025687108), (10, 2012843554), (17, 1184025620), (20, 1006421777), (34, 592012810), (68, 296006405), (85, 236805124), (107, 188116220), (170, 118402562), (214, 94058110), (340, 59201281), (428, 47029055), (509, 39545060), (535, 37623244), (1018, 19772530), (1070, 18811622), (1087, 18517420), (1819, 11065660), (2036, 9886265), (2140, 9405811), (2174, 9258710), (2545, 7909012), (3638, 5532830), (4348, 4629355), (5090, 3954506), (5435, 3703484), (7276, 2766415), (8653, 2326180), (9095, 2213132), (10180, 1977253), (10870, 1851742), (17306, 1163090), (18190, 1106566), (18479, 1089260), (21740, 925871), (34612, 581545), (36380, 553283), (36958, 544630), (43265, 465236), (54463, 369580), (73916, 272315), (86530, 232618), (92395, 217852), (108926, 184790), (116309, 173060)]