209512420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{443}}^1$

素因数の和:589

約数の個数: 96

約数和(自身を含む): 507523968

約数和(自身を除く): 298011548

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 107, 130, 170, 214, 221, 260, 340, 428, 442, 443, 535, 884, 886, 1070, 1105, 1391, 1772, 1819, 2140, 2210, 2215, 2782, 3638, 4420, 4430, 5564, 5759, 6955, 7276, 7531, 8860, 9095, 11518, 13910, 15062, 18190, 23036, 23647, 27820, 28795, 30124, 36380, 37655, 47294, 47401, 57590, 75310, 94588, 94802, 97903, 115180, 118235, 150620, 189604, 195806, 236470, 237005, 391612, 472940, 474010, 489515, 616213, 805817, 948020, 979030, 1232426, 1611634, 1958060, 2464852, 3081065, 3223268, 4029085, 6162130, 8058170, 10475621, 12324260, 16116340, 20951242, 41902484, 52378105, 104756210, 209512420]

約数ペア:

[(1, 209512420), (2, 104756210), (4, 52378105), (5, 41902484), (10, 20951242), (13, 16116340), (17, 12324260), (20, 10475621), (26, 8058170), (34, 6162130), (52, 4029085), (65, 3223268), (68, 3081065), (85, 2464852), (107, 1958060), (130, 1611634), (170, 1232426), (214, 979030), (221, 948020), (260, 805817), (340, 616213), (428, 489515), (442, 474010), (443, 472940), (535, 391612), (884, 237005), (886, 236470), (1070, 195806), (1105, 189604), (1391, 150620), (1772, 118235), (1819, 115180), (2140, 97903), (2210, 94802), (2215, 94588), (2782, 75310), (3638, 57590), (4420, 47401), (4430, 47294), (5564, 37655), (5759, 36380), (6955, 30124), (7276, 28795), (7531, 27820), (8860, 23647), (9095, 23036), (11518, 18190), (13910, 15062)]