20205955175

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:394

約数の個数: 144

約数和(自身を含む): 32144817600

約数和(自身を除く): 11938862425

約数列:

[1, 5, 7, 19, 25, 29, 35, 41, 95, 133, 145, 175, 203, 205, 269, 287, 361, 475, 551, 665, 725, 779, 1015, 1025, 1189, 1345, 1435, 1805, 1883, 2527, 2755, 3325, 3857, 3895, 5075, 5111, 5453, 5945, 6725, 7175, 7801, 8323, 9025, 9415, 10469, 11029, 12635, 13775, 14801, 19285, 19475, 22591, 25555, 27265, 29725, 35777, 39005, 41615, 47075, 52345, 54607, 55145, 63175, 73283, 74005, 77203, 96425, 97109, 103607, 112955, 127775, 136325, 148219, 158137, 178885, 195025, 208075, 209551, 261725, 273035, 275725, 319841, 366415, 370025, 386015, 429229, 485545, 518035, 564775, 679763, 741095, 790685, 894425, 1037533, 1047755, 1365175, 1466857, 1599205, 1832075, 1930075, 2146145, 2238887, 2427725, 2590175, 2816161, 3004603, 3398815, 3705475, 3953425, 3981469, 5187665, 5238775, 6076979, 7334285, 7996025, 10730725, 11194435, 14080805, 15023015, 16994075, 19713127, 19907345, 25938325, 27870283, 30384895, 36671425, 42538853, 55972175, 70404025, 75115075, 98565635, 99536725, 115462601, 139351415, 151924475, 212694265, 492828175, 577313005, 696757075, 808238207, 1063471325, 2886565025, 4041191035, 20205955175]

約数ペア:

[(1, 20205955175), (5, 4041191035), (7, 2886565025), (19, 1063471325), (25, 808238207), (29, 696757075), (35, 577313005), (41, 492828175), (95, 212694265), (133, 151924475), (145, 139351415), (175, 115462601), (203, 99536725), (205, 98565635), (269, 75115075), (287, 70404025), (361, 55972175), (475, 42538853), (551, 36671425), (665, 30384895), (725, 27870283), (779, 25938325), (1015, 19907345), (1025, 19713127), (1189, 16994075), (1345, 15023015), (1435, 14080805), (1805, 11194435), (1883, 10730725), (2527, 7996025), (2755, 7334285), (3325, 6076979), (3857, 5238775), (3895, 5187665), (5075, 3981469), (5111, 3953425), (5453, 3705475), (5945, 3398815), (6725, 3004603), (7175, 2816161), (7801, 2590175), (8323, 2427725), (9025, 2238887), (9415, 2146145), (10469, 1930075), (11029, 1832075), (12635, 1599205), (13775, 1466857), (14801, 1365175), (19285, 1047755), (19475, 1037533), (22591, 894425), (25555, 790685), (27265, 741095), (29725, 679763), (35777, 564775), (39005, 518035), (41615, 485545), (47075, 429229), (52345, 386015), (54607, 370025), (55145, 366415), (63175, 319841), (73283, 275725), (74005, 273035), (77203, 261725), (96425, 209551), (97109, 208075), (103607, 195025), (112955, 178885), (127775, 158137), (136325, 148219)]