208921245

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 418037760

約数和(自身を除く): 209116515

約数列:

[1, 3, 5, 13, 15, 17, 19, 31, 39, 51, 57, 65, 85, 93, 95, 107, 155, 195, 221, 247, 255, 285, 321, 323, 403, 465, 527, 535, 589, 663, 741, 969, 1105, 1209, 1235, 1391, 1581, 1605, 1615, 1767, 1819, 2015, 2033, 2635, 2945, 3315, 3317, 3705, 4173, 4199, 4845, 5457, 6045, 6099, 6851, 6955, 7657, 7905, 8835, 9095, 9951, 10013, 10165, 12597, 16585, 20553, 20865, 20995, 22971, 23647, 26429, 27285, 30039, 30495, 34255, 34561, 38285, 43121, 49755, 50065, 56389, 62985, 63023, 70941, 79287, 102765, 103683, 114855, 118235, 129363, 130169, 132145, 150195, 169167, 172805, 189069, 215605, 281945, 315115, 354705, 390507, 396435, 449293, 518415, 646815, 650845, 733057, 819299, 845835, 945345, 1071391, 1347879, 1952535, 2199171, 2246465, 2457897, 3214173, 3665285, 4096495, 5356955, 6739395, 10995855, 12289485, 13928083, 16070865, 41784249, 69640415, 208921245]

約数ペア:

[(1, 208921245), (3, 69640415), (5, 41784249), (13, 16070865), (15, 13928083), (17, 12289485), (19, 10995855), (31, 6739395), (39, 5356955), (51, 4096495), (57, 3665285), (65, 3214173), (85, 2457897), (93, 2246465), (95, 2199171), (107, 1952535), (155, 1347879), (195, 1071391), (221, 945345), (247, 845835), (255, 819299), (285, 733057), (321, 650845), (323, 646815), (403, 518415), (465, 449293), (527, 396435), (535, 390507), (589, 354705), (663, 315115), (741, 281945), (969, 215605), (1105, 189069), (1209, 172805), (1235, 169167), (1391, 150195), (1581, 132145), (1605, 130169), (1615, 129363), (1767, 118235), (1819, 114855), (2015, 103683), (2033, 102765), (2635, 79287), (2945, 70941), (3315, 63023), (3317, 62985), (3705, 56389), (4173, 50065), (4199, 49755), (4845, 43121), (5457, 38285), (6045, 34561), (6099, 34255), (6851, 30495), (6955, 30039), (7657, 27285), (7905, 26429), (8835, 23647), (9095, 22971), (9951, 20995), (10013, 20865), (10165, 20553), (12597, 16585)]