640755585

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:759

約数の個数: 96

約数和(自身を含む): 1245404160

約数和(自身を除く): 604648575

約数列:

[1, 3, 5, 9, 15, 17, 31, 41, 45, 51, 85, 93, 123, 153, 155, 205, 255, 279, 369, 465, 527, 615, 659, 697, 765, 1271, 1395, 1581, 1845, 1977, 2091, 2635, 3295, 3485, 3813, 4743, 5931, 6273, 6355, 7905, 9885, 10455, 11203, 11439, 19065, 20429, 21607, 23715, 27019, 29655, 31365, 33609, 56015, 57195, 61287, 64821, 81057, 100827, 102145, 108035, 135095, 168045, 183861, 194463, 243171, 306435, 324105, 347293, 405285, 459323, 504135, 837589, 919305, 972315, 1041879, 1215855, 1377969, 1736465, 2296615, 2512767, 3125637, 4133907, 4187945, 5209395, 6889845, 7538301, 12563835, 14239013, 15628185, 20669535, 37691505, 42717039, 71195065, 128151117, 213585195, 640755585]

約数ペア:

[(1, 640755585), (3, 213585195), (5, 128151117), (9, 71195065), (15, 42717039), (17, 37691505), (31, 20669535), (41, 15628185), (45, 14239013), (51, 12563835), (85, 7538301), (93, 6889845), (123, 5209395), (153, 4187945), (155, 4133907), (205, 3125637), (255, 2512767), (279, 2296615), (369, 1736465), (465, 1377969), (527, 1215855), (615, 1041879), (659, 972315), (697, 919305), (765, 837589), (1271, 504135), (1395, 459323), (1581, 405285), (1845, 347293), (1977, 324105), (2091, 306435), (2635, 243171), (3295, 194463), (3485, 183861), (3813, 168045), (4743, 135095), (5931, 108035), (6273, 102145), (6355, 100827), (7905, 81057), (9885, 64821), (10455, 61287), (11203, 57195), (11439, 56015), (19065, 33609), (20429, 31365), (21607, 29655), (23715, 27019)]